Home / 15,040.27-20,756.19-8,325.78

Finding the Fourth Proportional to 15,040.27, 20,756.19 and 8,325.78

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Solution

The fourth proportional to 15,040.27, 20,756.19 and 8,325.78 is: 11,489.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.27 : 20,756.19 = 8,325.78 : x
  2. Step 2: Convert to fraction form
    15,040.27/20,756.19 = 8,325.78/x
  3. Step 3: Cross multiply
    15,040.27x = 20,756.19 × 8,325.78
  4. Step 4: Simplify right side
    15,040.27x = 172,811,471.58
  5. Step 5: Solve for x
    x = 172,811,471.58/15,040.27
  6. Step 6: Final answer
    x = 11,489.92

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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.