Home / 18,724.68-25,839-11,179.53

Finding the Fourth Proportional to 18,724.68, 25,839 and 11,179.53

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Solution

The fourth proportional to 18,724.68, 25,839 and 11,179.53 is: 15,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.68 : 25,839 = 11,179.53 : x
  2. Step 2: Convert to fraction form
    18,724.68/25,839 = 11,179.53/x
  3. Step 3: Cross multiply
    18,724.68x = 25,839 × 11,179.53
  4. Step 4: Simplify right side
    18,724.68x = 288,867,875.67
  5. Step 5: Solve for x
    x = 288,867,875.67/18,724.68
  6. Step 6: Final answer
    x = 15,427.12

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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.