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Finding the Fourth Proportional to 26,649.52, 39,962.88 and 9,121.12

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Solution

The fourth proportional to 26,649.52, 39,962.88 and 9,121.12 is: 13,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,649.52 : 39,962.88 = 9,121.12 : x
  2. Step 2: Convert to fraction form
    26,649.52/39,962.88 = 9,121.12/x
  3. Step 3: Cross multiply
    26,649.52x = 39,962.88 × 9,121.12
  4. Step 4: Simplify right side
    26,649.52x = 364,506,224.03
  5. Step 5: Solve for x
    x = 364,506,224.03/26,649.52
  6. Step 6: Final answer
    x = 13,677.78

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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.