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Finding the Fourth Proportional to 15,480.38, 21,363 and 8,767.31

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Solution

The fourth proportional to 15,480.38, 21,363 and 8,767.31 is: 12,098.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,480.38 : 21,363 = 8,767.31 : x
  2. Step 2: Convert to fraction form
    15,480.38/21,363 = 8,767.31/x
  3. Step 3: Cross multiply
    15,480.38x = 21,363 × 8,767.31
  4. Step 4: Simplify right side
    15,480.38x = 187,296,043.53
  5. Step 5: Solve for x
    x = 187,296,043.53/15,480.38
  6. Step 6: Final answer
    x = 12,098.93

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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.