Home / 15,099.46-20,833.90-9,131

Finding the Fourth Proportional to 15,099.46, 20,833.90 and 9,131

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Solution

The fourth proportional to 15,099.46, 20,833.90 and 9,131 is: 12,598.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.46 : 20,833.90 = 9,131 : x
  2. Step 2: Convert to fraction form
    15,099.46/20,833.90 = 9,131/x
  3. Step 3: Cross multiply
    15,099.46x = 20,833.90 × 9,131
  4. Step 4: Simplify right side
    15,099.46x = 190,234,340.90
  5. Step 5: Solve for x
    x = 190,234,340.90/15,099.46
  6. Step 6: Final answer
    x = 12,598.75

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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.