Home / 28,071.60-38,738.55-15,496.32

Finding the Fourth Proportional to 28,071.60, 38,738.55 and 15,496.32

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Solution

The fourth proportional to 28,071.60, 38,738.55 and 15,496.32 is: 21,384.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.60 : 38,738.55 = 15,496.32 : x
  2. Step 2: Convert to fraction form
    28,071.60/38,738.55 = 15,496.32/x
  3. Step 3: Cross multiply
    28,071.60x = 38,738.55 × 15,496.32
  4. Step 4: Simplify right side
    28,071.60x = 600,304,967.14
  5. Step 5: Solve for x
    x = 600,304,967.14/28,071.60
  6. Step 6: Final answer
    x = 21,384.78

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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.