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Finding the Fourth Proportional to 39,165.61, 54,049.52 and 21,260.61

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Solution

The fourth proportional to 39,165.61, 54,049.52 and 21,260.61 is: 29,340.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,165.61 : 54,049.52 = 21,260.61 : x
  2. Step 2: Convert to fraction form
    39,165.61/54,049.52 = 21,260.61/x
  3. Step 3: Cross multiply
    39,165.61x = 54,049.52 × 21,260.61
  4. Step 4: Simplify right side
    39,165.61x = 1,149,125,765.41
  5. Step 5: Solve for x
    x = 1,149,125,765.41/39,165.61
  6. Step 6: Final answer
    x = 29,340.17

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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.