Home / 20,355.50-28,096.17-12,397.66

Finding the Fourth Proportional to 20,355.50, 28,096.17 and 12,397.66

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Solution

The fourth proportional to 20,355.50, 28,096.17 and 12,397.66 is: 17,112.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.50 : 28,096.17 = 12,397.66 : x
  2. Step 2: Convert to fraction form
    20,355.50/28,096.17 = 12,397.66/x
  3. Step 3: Cross multiply
    20,355.50x = 28,096.17 × 12,397.66
  4. Step 4: Simplify right side
    20,355.50x = 348,326,646.23
  5. Step 5: Solve for x
    x = 348,326,646.23/20,355.50
  6. Step 6: Final answer
    x = 17,112.16

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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.