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Finding the Fourth Proportional to 15,162.78, 22,731.21 and 9,957.18

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Solution

The fourth proportional to 15,162.78, 22,731.21 and 9,957.18 is: 14,927.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,162.78 : 22,731.21 = 9,957.18 : x
  2. Step 2: Convert to fraction form
    15,162.78/22,731.21 = 9,957.18/x
  3. Step 3: Cross multiply
    15,162.78x = 22,731.21 × 9,957.18
  4. Step 4: Simplify right side
    15,162.78x = 226,338,749.59
  5. Step 5: Solve for x
    x = 226,338,749.59/15,162.78
  6. Step 6: Final answer
    x = 14,927.26

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1.5x scale

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.