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Finding the Fourth Proportional to 15,138.27, 22,678.79 and 8,569.17

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Solution

The fourth proportional to 15,138.27, 22,678.79 and 8,569.17 is: 12,837.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.27 : 22,678.79 = 8,569.17 : x
  2. Step 2: Convert to fraction form
    15,138.27/22,678.79 = 8,569.17/x
  3. Step 3: Cross multiply
    15,138.27x = 22,678.79 × 8,569.17
  4. Step 4: Simplify right side
    15,138.27x = 194,338,364.06
  5. Step 5: Solve for x
    x = 194,338,364.06/15,138.27
  6. Step 6: Final answer
    x = 12,837.55

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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.