Home / 18,644.38-25,730.36-10,687.12

Finding the Fourth Proportional to 18,644.38, 25,730.36 and 10,687.12

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Solution

The fourth proportional to 18,644.38, 25,730.36 and 10,687.12 is: 14,748.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.38 : 25,730.36 = 10,687.12 : x
  2. Step 2: Convert to fraction form
    18,644.38/25,730.36 = 10,687.12/x
  3. Step 3: Cross multiply
    18,644.38x = 25,730.36 × 10,687.12
  4. Step 4: Simplify right side
    18,644.38x = 274,983,262.88
  5. Step 5: Solve for x
    x = 274,983,262.88/18,644.38
  6. Step 6: Final answer
    x = 14,748.86

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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.