Home / 39,155.85-54,034.58-21,251.52

Finding the Fourth Proportional to 39,155.85, 54,034.58 and 21,251.52

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Solution

The fourth proportional to 39,155.85, 54,034.58 and 21,251.52 is: 29,326.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,155.85 : 54,034.58 = 21,251.52 : x
  2. Step 2: Convert to fraction form
    39,155.85/54,034.58 = 21,251.52/x
  3. Step 3: Cross multiply
    39,155.85x = 54,034.58 × 21,251.52
  4. Step 4: Simplify right side
    39,155.85x = 1,148,316,851.30
  5. Step 5: Solve for x
    x = 1,148,316,851.30/39,155.85
  6. Step 6: Final answer
    x = 29,326.83

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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.