Home / 20,349.66-28,083.15-11,397.14

Finding the Fourth Proportional to 20,349.66, 28,083.15 and 11,397.14

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Solution

The fourth proportional to 20,349.66, 28,083.15 and 11,397.14 is: 15,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.66 : 28,083.15 = 11,397.14 : x
  2. Step 2: Convert to fraction form
    20,349.66/28,083.15 = 11,397.14/x
  3. Step 3: Cross multiply
    20,349.66x = 28,083.15 × 11,397.14
  4. Step 4: Simplify right side
    20,349.66x = 320,067,592.19
  5. Step 5: Solve for x
    x = 320,067,592.19/20,349.66
  6. Step 6: Final answer
    x = 15,728.40

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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.