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Finding the Fourth Proportional to 26,291.55, 39,411 and 10,490.88

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Solution

The fourth proportional to 26,291.55, 39,411 and 10,490.88 is: 15,725.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,291.55 : 39,411 = 10,490.88 : x
  2. Step 2: Convert to fraction form
    26,291.55/39,411 = 10,490.88/x
  3. Step 3: Cross multiply
    26,291.55x = 39,411 × 10,490.88
  4. Step 4: Simplify right side
    26,291.55x = 413,456,071.68
  5. Step 5: Solve for x
    x = 413,456,071.68/26,291.55
  6. Step 6: Final answer
    x = 15,725.82

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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.