Home / 39,543.53-54,570.95-21,638.53

Finding the Fourth Proportional to 39,543.53, 54,570.95 and 21,638.53

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Solution

The fourth proportional to 39,543.53, 54,570.95 and 21,638.53 is: 29,861.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,543.53 : 54,570.95 = 21,638.53 : x
  2. Step 2: Convert to fraction form
    39,543.53/54,570.95 = 21,638.53/x
  3. Step 3: Cross multiply
    39,543.53x = 54,570.95 × 21,638.53
  4. Step 4: Simplify right side
    39,543.53x = 1,180,834,757.66
  5. Step 5: Solve for x
    x = 1,180,834,757.66/39,543.53
  6. Step 6: Final answer
    x = 29,861.64

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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.