Home / 28,124.16-42,172.46-9,397.78

Finding the Fourth Proportional to 28,124.16, 42,172.46 and 9,397.78

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Solution

The fourth proportional to 28,124.16, 42,172.46 and 9,397.78 is: 14,092.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,124.16 : 42,172.46 = 9,397.78 : x
  2. Step 2: Convert to fraction form
    28,124.16/42,172.46 = 9,397.78/x
  3. Step 3: Cross multiply
    28,124.16x = 42,172.46 × 9,397.78
  4. Step 4: Simplify right side
    28,124.16x = 396,327,501.14
  5. Step 5: Solve for x
    x = 396,327,501.14/28,124.16
  6. Step 6: Final answer
    x = 14,092.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.