Home / 39,240.47-54,153.42-21,335.42

Finding the Fourth Proportional to 39,240.47, 54,153.42 and 21,335.42

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Solution

The fourth proportional to 39,240.47, 54,153.42 and 21,335.42 is: 29,443.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,240.47 : 54,153.42 = 21,335.42 : x
  2. Step 2: Convert to fraction form
    39,240.47/54,153.42 = 21,335.42/x
  3. Step 3: Cross multiply
    39,240.47x = 54,153.42 × 21,335.42
  4. Step 4: Simplify right side
    39,240.47x = 1,155,385,960.14
  5. Step 5: Solve for x
    x = 1,155,385,960.14/39,240.47
  6. Step 6: Final answer
    x = 29,443.73

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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.