Home / 39,438.36-54,423.90-21,534.12

Finding the Fourth Proportional to 39,438.36, 54,423.90 and 21,534.12

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Solution

The fourth proportional to 39,438.36, 54,423.90 and 21,534.12 is: 29,716.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,438.36 : 54,423.90 = 21,534.12 : x
  2. Step 2: Convert to fraction form
    39,438.36/54,423.90 = 21,534.12/x
  3. Step 3: Cross multiply
    39,438.36x = 54,423.90 × 21,534.12
  4. Step 4: Simplify right side
    39,438.36x = 1,171,970,793.47
  5. Step 5: Solve for x
    x = 1,171,970,793.47/39,438.36
  6. Step 6: Final answer
    x = 29,716.52

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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.