Home / 18,713.74-25,816.15-11,155.76

Finding the Fourth Proportional to 18,713.74, 25,816.15 and 11,155.76

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Solution

The fourth proportional to 18,713.74, 25,816.15 and 11,155.76 is: 15,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.74 : 25,816.15 = 11,155.76 : x
  2. Step 2: Convert to fraction form
    18,713.74/25,816.15 = 11,155.76/x
  3. Step 3: Cross multiply
    18,713.74x = 25,816.15 × 11,155.76
  4. Step 4: Simplify right side
    18,713.74x = 287,998,773.52
  5. Step 5: Solve for x
    x = 287,998,773.52/18,713.74
  6. Step 6: Final answer
    x = 15,389.70

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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.