Home / 39,376.72-54,339.60-21,471.76

Finding the Fourth Proportional to 39,376.72, 54,339.60 and 21,471.76

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Solution

The fourth proportional to 39,376.72, 54,339.60 and 21,471.76 is: 29,630.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,376.72 : 54,339.60 = 21,471.76 : x
  2. Step 2: Convert to fraction form
    39,376.72/54,339.60 = 21,471.76/x
  3. Step 3: Cross multiply
    39,376.72x = 54,339.60 × 21,471.76
  4. Step 4: Simplify right side
    39,376.72x = 1,166,766,849.70
  5. Step 5: Solve for x
    x = 1,166,766,849.70/39,376.72
  6. Step 6: Final answer
    x = 29,630.88

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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.