Home / 20,302.54-28,019.13-11,691.41

Finding the Fourth Proportional to 20,302.54, 28,019.13 and 11,691.41

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Solution

The fourth proportional to 20,302.54, 28,019.13 and 11,691.41 is: 16,135.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.54 : 28,019.13 = 11,691.41 : x
  2. Step 2: Convert to fraction form
    20,302.54/28,019.13 = 11,691.41/x
  3. Step 3: Cross multiply
    20,302.54x = 28,019.13 × 11,691.41
  4. Step 4: Simplify right side
    20,302.54x = 327,582,938.12
  5. Step 5: Solve for x
    x = 327,582,938.12/20,302.54
  6. Step 6: Final answer
    x = 16,135.07

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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.