Home / 39,377.40-54,339.82-21,472.75

Finding the Fourth Proportional to 39,377.40, 54,339.82 and 21,472.75

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Solution

The fourth proportional to 39,377.40, 54,339.82 and 21,472.75 is: 29,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,377.40 : 54,339.82 = 21,472.75 : x
  2. Step 2: Convert to fraction form
    39,377.40/54,339.82 = 21,472.75/x
  3. Step 3: Cross multiply
    39,377.40x = 54,339.82 × 21,472.75
  4. Step 4: Simplify right side
    39,377.40x = 1,166,825,369.91
  5. Step 5: Solve for x
    x = 1,166,825,369.91/39,377.40
  6. Step 6: Final answer
    x = 29,631.85

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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.