Home / 39,386.52-54,353.85-21,481.47

Finding the Fourth Proportional to 39,386.52, 54,353.85 and 21,481.47

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Solution

The fourth proportional to 39,386.52, 54,353.85 and 21,481.47 is: 29,644.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,386.52 : 54,353.85 = 21,481.47 : x
  2. Step 2: Convert to fraction form
    39,386.52/54,353.85 = 21,481.47/x
  3. Step 3: Cross multiply
    39,386.52x = 54,353.85 × 21,481.47
  4. Step 4: Simplify right side
    39,386.52x = 1,167,600,598.16
  5. Step 5: Solve for x
    x = 1,167,600,598.16/39,386.52
  6. Step 6: Final answer
    x = 29,644.68

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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.