Home / 39,543.86-54,570.60-21,639.00

Finding the Fourth Proportional to 39,543.86, 54,570.60 and 21,639.00

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Solution

The fourth proportional to 39,543.86, 54,570.60 and 21,639.00 is: 29,861.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,543.86 : 54,570.60 = 21,639.00 : x
  2. Step 2: Convert to fraction form
    39,543.86/54,570.60 = 21,639.00/x
  3. Step 3: Cross multiply
    39,543.86x = 54,570.60 × 21,639.00
  4. Step 4: Simplify right side
    39,543.86x = 1,180,853,217.58
  5. Step 5: Solve for x
    x = 1,180,853,217.58/39,543.86
  6. Step 6: Final answer
    x = 29,861.86

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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.