Home / 18,382.20-25,363.36-10,422.60

Finding the Fourth Proportional to 18,382.20, 25,363.36 and 10,422.60

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Solution

The fourth proportional to 18,382.20, 25,363.36 and 10,422.60 is: 14,380.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,382.20 : 25,363.36 = 10,422.60 : x
  2. Step 2: Convert to fraction form
    18,382.20/25,363.36 = 10,422.60/x
  3. Step 3: Cross multiply
    18,382.20x = 25,363.36 × 10,422.60
  4. Step 4: Simplify right side
    18,382.20x = 264,352,155.94
  5. Step 5: Solve for x
    x = 264,352,155.94/18,382.20
  6. Step 6: Final answer
    x = 14,380.88

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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.