Home / 14,589.64-20,129.70-8,618.68

Finding the Fourth Proportional to 14,589.64, 20,129.70 and 8,618.68

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Solution

The fourth proportional to 14,589.64, 20,129.70 and 8,618.68 is: 11,891.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,589.64 : 20,129.70 = 8,618.68 : x
  2. Step 2: Convert to fraction form
    14,589.64/20,129.70 = 8,618.68/x
  3. Step 3: Cross multiply
    14,589.64x = 20,129.70 × 8,618.68
  4. Step 4: Simplify right side
    14,589.64x = 173,491,442.80
  5. Step 5: Solve for x
    x = 173,491,442.80/14,589.64
  6. Step 6: Final answer
    x = 11,891.41

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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.