Home / 18,331-25,296.78-9,947.50

Finding the Fourth Proportional to 18,331, 25,296.78 and 9,947.50

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Solution

The fourth proportional to 18,331, 25,296.78 and 9,947.50 is: 13,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331 : 25,296.78 = 9,947.50 : x
  2. Step 2: Convert to fraction form
    18,331/25,296.78 = 9,947.50/x
  3. Step 3: Cross multiply
    18,331x = 25,296.78 × 9,947.50
  4. Step 4: Simplify right side
    18,331x = 251,639,719.05
  5. Step 5: Solve for x
    x = 251,639,719.05/18,331
  6. Step 6: Final answer
    x = 13,727.55

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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.