Home / 39,595.92-54,642.40-21,691.58

Finding the Fourth Proportional to 39,595.92, 54,642.40 and 21,691.58

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Solution

The fourth proportional to 39,595.92, 54,642.40 and 21,691.58 is: 29,934.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,595.92 : 54,642.40 = 21,691.58 : x
  2. Step 2: Convert to fraction form
    39,595.92/54,642.40 = 21,691.58/x
  3. Step 3: Cross multiply
    39,595.92x = 54,642.40 × 21,691.58
  4. Step 4: Simplify right side
    39,595.92x = 1,185,279,663.55
  5. Step 5: Solve for x
    x = 1,185,279,663.55/39,595.92
  6. Step 6: Final answer
    x = 29,934.39

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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.