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Finding the Fourth Proportional to 15,491.52, 21,375.09 and 9,440.82

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Solution

The fourth proportional to 15,491.52, 21,375.09 and 9,440.82 is: 13,026.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,491.52 : 21,375.09 = 9,440.82 : x
  2. Step 2: Convert to fraction form
    15,491.52/21,375.09 = 9,440.82/x
  3. Step 3: Cross multiply
    15,491.52x = 21,375.09 × 9,440.82
  4. Step 4: Simplify right side
    15,491.52x = 201,798,377.17
  5. Step 5: Solve for x
    x = 201,798,377.17/15,491.52
  6. Step 6: Final answer
    x = 13,026.38

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Double scale
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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.