Home / 39,158.91-54,039.49-21,253.95

Finding the Fourth Proportional to 39,158.91, 54,039.49 and 21,253.95

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Solution

The fourth proportional to 39,158.91, 54,039.49 and 21,253.95 is: 29,330.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,158.91 : 54,039.49 = 21,253.95 : x
  2. Step 2: Convert to fraction form
    39,158.91/54,039.49 = 21,253.95/x
  3. Step 3: Cross multiply
    39,158.91x = 54,039.49 × 21,253.95
  4. Step 4: Simplify right side
    39,158.91x = 1,148,552,565.35
  5. Step 5: Solve for x
    x = 1,148,552,565.35/39,158.91
  6. Step 6: Final answer
    x = 29,330.56

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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.