Home / 39,311.87-54,251.42-21,407.63

Finding the Fourth Proportional to 39,311.87, 54,251.42 and 21,407.63

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Solution

The fourth proportional to 39,311.87, 54,251.42 and 21,407.63 is: 29,543.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,311.87 : 54,251.42 = 21,407.63 : x
  2. Step 2: Convert to fraction form
    39,311.87/54,251.42 = 21,407.63/x
  3. Step 3: Cross multiply
    39,311.87x = 54,251.42 × 21,407.63
  4. Step 4: Simplify right side
    39,311.87x = 1,161,394,326.33
  5. Step 5: Solve for x
    x = 1,161,394,326.33/39,311.87
  6. Step 6: Final answer
    x = 29,543.10

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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.