Home / 11,344.08-15,651.45-8,978.88

Finding the Fourth Proportional to 11,344.08, 15,651.45 and 8,978.88

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Solution

The fourth proportional to 11,344.08, 15,651.45 and 8,978.88 is: 12,388.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,344.08 : 15,651.45 = 8,978.88 : x
  2. Step 2: Convert to fraction form
    11,344.08/15,651.45 = 8,978.88/x
  3. Step 3: Cross multiply
    11,344.08x = 15,651.45 × 8,978.88
  4. Step 4: Simplify right side
    11,344.08x = 140,532,491.38
  5. Step 5: Solve for x
    x = 140,532,491.38/11,344.08
  6. Step 6: Final answer
    x = 12,388.18

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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.