Home / 18,187.20-25,106.76-13,712.80

Finding the Fourth Proportional to 18,187.20, 25,106.76 and 13,712.80

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Solution

The fourth proportional to 18,187.20, 25,106.76 and 13,712.80 is: 18,930.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.20 : 25,106.76 = 13,712.80 : x
  2. Step 2: Convert to fraction form
    18,187.20/25,106.76 = 13,712.80/x
  3. Step 3: Cross multiply
    18,187.20x = 25,106.76 × 13,712.80
  4. Step 4: Simplify right side
    18,187.20x = 344,283,978.53
  5. Step 5: Solve for x
    x = 344,283,978.53/18,187.20
  6. Step 6: Final answer
    x = 18,930.02

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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.