Home / 39,165.47-54,049.50-21,261.63

Finding the Fourth Proportional to 39,165.47, 54,049.50 and 21,261.63

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Solution

The fourth proportional to 39,165.47, 54,049.50 and 21,261.63 is: 29,341.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,165.47 : 54,049.50 = 21,261.63 : x
  2. Step 2: Convert to fraction form
    39,165.47/54,049.50 = 21,261.63/x
  3. Step 3: Cross multiply
    39,165.47x = 54,049.50 × 21,261.63
  4. Step 4: Simplify right side
    39,165.47x = 1,149,180,470.69
  5. Step 5: Solve for x
    x = 1,149,180,470.69/39,165.47
  6. Step 6: Final answer
    x = 29,341.68

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Double scale
Find fourth proportional to 39,166.47, 54,050.88 and 21,262.63
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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.