Home / 20,349.10-28,081.10-11,274.09

Finding the Fourth Proportional to 20,349.10, 28,081.10 and 11,274.09

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Solution

The fourth proportional to 20,349.10, 28,081.10 and 11,274.09 is: 15,557.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.10 : 28,081.10 = 11,274.09 : x
  2. Step 2: Convert to fraction form
    20,349.10/28,081.10 = 11,274.09/x
  3. Step 3: Cross multiply
    20,349.10x = 28,081.10 × 11,274.09
  4. Step 4: Simplify right side
    20,349.10x = 316,588,848.70
  5. Step 5: Solve for x
    x = 316,588,848.70/20,349.10
  6. Step 6: Final answer
    x = 15,557.88

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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.