Home / 39,438.18-54,425.99-21,534.55

Finding the Fourth Proportional to 39,438.18, 54,425.99 and 21,534.55

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Solution

The fourth proportional to 39,438.18, 54,425.99 and 21,534.55 is: 29,718.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,438.18 : 54,425.99 = 21,534.55 : x
  2. Step 2: Convert to fraction form
    39,438.18/54,425.99 = 21,534.55/x
  3. Step 3: Cross multiply
    39,438.18x = 54,425.99 × 21,534.55
  4. Step 4: Simplify right side
    39,438.18x = 1,172,039,120.73
  5. Step 5: Solve for x
    x = 1,172,039,120.73/39,438.18
  6. Step 6: Final answer
    x = 29,718.39

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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.