Home / 12,589.20-18,864.60-10,630.80

Finding the Fourth Proportional to 12,589.20, 18,864.60 and 10,630.80

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Solution

The fourth proportional to 12,589.20, 18,864.60 and 10,630.80 is: 15,929.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,589.20 : 18,864.60 = 10,630.80 : x
  2. Step 2: Convert to fraction form
    12,589.20/18,864.60 = 10,630.80/x
  3. Step 3: Cross multiply
    12,589.20x = 18,864.60 × 10,630.80
  4. Step 4: Simplify right side
    12,589.20x = 200,545,789.68
  5. Step 5: Solve for x
    x = 200,545,789.68/12,589.20
  6. Step 6: Final answer
    x = 15,929.99

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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.