Home / 12,687.24-18,996.80-10,337.64

Finding the Fourth Proportional to 12,687.24, 18,996.80 and 10,337.64

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Solution

The fourth proportional to 12,687.24, 18,996.80 and 10,337.64 is: 15,478.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.24 : 18,996.80 = 10,337.64 : x
  2. Step 2: Convert to fraction form
    12,687.24/18,996.80 = 10,337.64/x
  3. Step 3: Cross multiply
    12,687.24x = 18,996.80 × 10,337.64
  4. Step 4: Simplify right side
    12,687.24x = 196,382,079.55
  5. Step 5: Solve for x
    x = 196,382,079.55/12,687.24
  6. Step 6: Final answer
    x = 15,478.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.