Home / 10,956.74-15,120.56-6,649.88

Finding the Fourth Proportional to 10,956.74, 15,120.56 and 6,649.88

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Solution

The fourth proportional to 10,956.74, 15,120.56 and 6,649.88 is: 9,176.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.74 : 15,120.56 = 6,649.88 : x
  2. Step 2: Convert to fraction form
    10,956.74/15,120.56 = 6,649.88/x
  3. Step 3: Cross multiply
    10,956.74x = 15,120.56 × 6,649.88
  4. Step 4: Simplify right side
    10,956.74x = 100,549,850.55
  5. Step 5: Solve for x
    x = 100,549,850.55/10,956.74
  6. Step 6: Final answer
    x = 9,176.99

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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.