Home / 18,458.76-25,470.06-11,387.40

Finding the Fourth Proportional to 18,458.76, 25,470.06 and 11,387.40

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Solution

The fourth proportional to 18,458.76, 25,470.06 and 11,387.40 is: 15,712.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.76 : 25,470.06 = 11,387.40 : x
  2. Step 2: Convert to fraction form
    18,458.76/25,470.06 = 11,387.40/x
  3. Step 3: Cross multiply
    18,458.76x = 25,470.06 × 11,387.40
  4. Step 4: Simplify right side
    18,458.76x = 290,037,761.24
  5. Step 5: Solve for x
    x = 290,037,761.24/18,458.76
  6. Step 6: Final answer
    x = 15,712.74

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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.