Home / 39,543.20-54,570.84-21,638.96

Finding the Fourth Proportional to 39,543.20, 54,570.84 and 21,638.96

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Solution

The fourth proportional to 39,543.20, 54,570.84 and 21,638.96 is: 29,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,543.20 : 54,570.84 = 21,638.96 : x
  2. Step 2: Convert to fraction form
    39,543.20/54,570.84 = 21,638.96/x
  3. Step 3: Cross multiply
    39,543.20x = 54,570.84 × 21,638.96
  4. Step 4: Simplify right side
    39,543.20x = 1,180,856,223.93
  5. Step 5: Solve for x
    x = 1,180,856,223.93/39,543.20
  6. Step 6: Final answer
    x = 29,862.43

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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.