Home / 13,542.74-20,296.78-11,780.38

Finding the Fourth Proportional to 13,542.74, 20,296.78 and 11,780.38

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Solution

The fourth proportional to 13,542.74, 20,296.78 and 11,780.38 is: 17,655.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.74 : 20,296.78 = 11,780.38 : x
  2. Step 2: Convert to fraction form
    13,542.74/20,296.78 = 11,780.38/x
  3. Step 3: Cross multiply
    13,542.74x = 20,296.78 × 11,780.38
  4. Step 4: Simplify right side
    13,542.74x = 239,103,781.18
  5. Step 5: Solve for x
    x = 239,103,781.18/13,542.74
  6. Step 6: Final answer
    x = 17,655.50

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1.5x scale

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.