Home / 15,040.08-20,755.35-8,325.90

Finding the Fourth Proportional to 15,040.08, 20,755.35 and 8,325.90

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Solution

The fourth proportional to 15,040.08, 20,755.35 and 8,325.90 is: 11,489.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.08 : 20,755.35 = 8,325.90 : x
  2. Step 2: Convert to fraction form
    15,040.08/20,755.35 = 8,325.90/x
  3. Step 3: Cross multiply
    15,040.08x = 20,755.35 × 8,325.90
  4. Step 4: Simplify right side
    15,040.08x = 172,806,968.57
  5. Step 5: Solve for x
    x = 172,806,968.57/15,040.08
  6. Step 6: Final answer
    x = 11,489.76

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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.