Home / 39,638.76-54,702.23-21,732.69

Finding the Fourth Proportional to 39,638.76, 54,702.23 and 21,732.69

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Solution

The fourth proportional to 39,638.76, 54,702.23 and 21,732.69 is: 29,991.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,638.76 : 54,702.23 = 21,732.69 : x
  2. Step 2: Convert to fraction form
    39,638.76/54,702.23 = 21,732.69/x
  3. Step 3: Cross multiply
    39,638.76x = 54,702.23 × 21,732.69
  4. Step 4: Simplify right side
    39,638.76x = 1,188,826,606.90
  5. Step 5: Solve for x
    x = 1,188,826,606.90/39,638.76
  6. Step 6: Final answer
    x = 29,991.52

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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.