Home / 28,051,560,071.19-38,711,173,768.89-15,191,299,858.72

Finding the Fourth Proportional to 28,051,560,071.19, 38,711,173,768.89 and 15,191,299,858.72

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Solution

The fourth proportional to 28,051,560,071.19, 38,711,173,768.89 and 15,191,299,858.72 is: 20,964,005,107.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051,560,071.19 : 38,711,173,768.89 = 15,191,299,858.72 : x
  2. Step 2: Convert to fraction form
    28,051,560,071.19/38,711,173,768.89 = 15,191,299,858.72/x
  3. Step 3: Cross multiply
    28,051,560,071.19x = 38,711,173,768.89 × 15,191,299,858.72
  4. Step 4: Simplify right side
    28,051,560,071.19x = 588,073,048,606,030,495,744
  5. Step 5: Solve for x
    x = 588,073,048,606,030,495,744/28,051,560,071.19
  6. Step 6: Final answer
    x = 20,964,005,107.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.