Home / 15,040.10-20,755.26-8,234.74

Finding the Fourth Proportional to 15,040.10, 20,755.26 and 8,234.74

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Solution

The fourth proportional to 15,040.10, 20,755.26 and 8,234.74 is: 11,363.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.10 : 20,755.26 = 8,234.74 : x
  2. Step 2: Convert to fraction form
    15,040.10/20,755.26 = 8,234.74/x
  3. Step 3: Cross multiply
    15,040.10x = 20,755.26 × 8,234.74
  4. Step 4: Simplify right side
    15,040.10x = 170,914,114.14
  5. Step 5: Solve for x
    x = 170,914,114.14/15,040.10
  6. Step 6: Final answer
    x = 11,363.90

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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.