Home / 15,131.66-20,882.18-8,325.96

Finding the Fourth Proportional to 15,131.66, 20,882.18 and 8,325.96

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Solution

The fourth proportional to 15,131.66, 20,882.18 and 8,325.96 is: 11,490.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.66 : 20,882.18 = 8,325.96 : x
  2. Step 2: Convert to fraction form
    15,131.66/20,882.18 = 8,325.96/x
  3. Step 3: Cross multiply
    15,131.66x = 20,882.18 × 8,325.96
  4. Step 4: Simplify right side
    15,131.66x = 173,864,153.76
  5. Step 5: Solve for x
    x = 173,864,153.76/15,131.66
  6. Step 6: Final answer
    x = 11,490.10

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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.