Home / 39,439.78-54,427.82-21,534.92

Finding the Fourth Proportional to 39,439.78, 54,427.82 and 21,534.92

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Solution

The fourth proportional to 39,439.78, 54,427.82 and 21,534.92 is: 29,718.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,439.78 : 54,427.82 = 21,534.92 : x
  2. Step 2: Convert to fraction form
    39,439.78/54,427.82 = 21,534.92/x
  3. Step 3: Cross multiply
    39,439.78x = 54,427.82 × 21,534.92
  4. Step 4: Simplify right side
    39,439.78x = 1,172,098,573.77
  5. Step 5: Solve for x
    x = 1,172,098,573.77/39,439.78
  6. Step 6: Final answer
    x = 29,718.69

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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.