Home / 10,990.11-15,167.34-6,275.91

Finding the Fourth Proportional to 10,990.11, 15,167.34 and 6,275.91

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Solution

The fourth proportional to 10,990.11, 15,167.34 and 6,275.91 is: 8,661.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.11 : 15,167.34 = 6,275.91 : x
  2. Step 2: Convert to fraction form
    10,990.11/15,167.34 = 6,275.91/x
  3. Step 3: Cross multiply
    10,990.11x = 15,167.34 × 6,275.91
  4. Step 4: Simplify right side
    10,990.11x = 95,188,860.78
  5. Step 5: Solve for x
    x = 95,188,860.78/10,990.11
  6. Step 6: Final answer
    x = 8,661.32

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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.