Home / 18,154.30-25,043.91-15,761.02

Finding the Fourth Proportional to 18,154.30, 25,043.91 and 15,761.02

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Solution

The fourth proportional to 18,154.30, 25,043.91 and 15,761.02 is: 21,742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,154.30 : 25,043.91 = 15,761.02 : x
  2. Step 2: Convert to fraction form
    18,154.30/25,043.91 = 15,761.02/x
  3. Step 3: Cross multiply
    18,154.30x = 25,043.91 × 15,761.02
  4. Step 4: Simplify right side
    18,154.30x = 394,717,566.39
  5. Step 5: Solve for x
    x = 394,717,566.39/18,154.30
  6. Step 6: Final answer
    x = 21,742.37

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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.