Home / 15,040.12-20,755.11-8,325.60

Finding the Fourth Proportional to 15,040.12, 20,755.11 and 8,325.60

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Solution

The fourth proportional to 15,040.12, 20,755.11 and 8,325.60 is: 11,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.12 : 20,755.11 = 8,325.60 : x
  2. Step 2: Convert to fraction form
    15,040.12/20,755.11 = 8,325.60/x
  3. Step 3: Cross multiply
    15,040.12x = 20,755.11 × 8,325.60
  4. Step 4: Simplify right side
    15,040.12x = 172,798,743.82
  5. Step 5: Solve for x
    x = 172,798,743.82/15,040.12
  6. Step 6: Final answer
    x = 11,489.19

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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.