Home / 39,829.52-59,742.84-12,126.80

Finding the Fourth Proportional to 39,829.52, 59,742.84 and 12,126.80

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Solution

The fourth proportional to 39,829.52, 59,742.84 and 12,126.80 is: 18,189.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,829.52 : 59,742.84 = 12,126.80 : x
  2. Step 2: Convert to fraction form
    39,829.52/59,742.84 = 12,126.80/x
  3. Step 3: Cross multiply
    39,829.52x = 59,742.84 × 12,126.80
  4. Step 4: Simplify right side
    39,829.52x = 724,489,472.11
  5. Step 5: Solve for x
    x = 724,489,472.11/39,829.52
  6. Step 6: Final answer
    x = 18,189.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.