Home / 10,995.12-15,175.08-6,280.88

Finding the Fourth Proportional to 10,995.12, 15,175.08 and 6,280.88

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Solution

The fourth proportional to 10,995.12, 15,175.08 and 6,280.88 is: 8,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,995.12 : 15,175.08 = 6,280.88 : x
  2. Step 2: Convert to fraction form
    10,995.12/15,175.08 = 6,280.88/x
  3. Step 3: Cross multiply
    10,995.12x = 15,175.08 × 6,280.88
  4. Step 4: Simplify right side
    10,995.12x = 95,312,856.47
  5. Step 5: Solve for x
    x = 95,312,856.47/10,995.12
  6. Step 6: Final answer
    x = 8,668.65

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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.