Home / 20,610.15-30,915.33-8,760.87

Finding the Fourth Proportional to 20,610.15, 30,915.33 and 8,760.87

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Solution

The fourth proportional to 20,610.15, 30,915.33 and 8,760.87 is: 13,141.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.15 : 30,915.33 = 8,760.87 : x
  2. Step 2: Convert to fraction form
    20,610.15/30,915.33 = 8,760.87/x
  3. Step 3: Cross multiply
    20,610.15x = 30,915.33 × 8,760.87
  4. Step 4: Simplify right side
    20,610.15x = 270,845,187.14
  5. Step 5: Solve for x
    x = 270,845,187.14/20,610.15
  6. Step 6: Final answer
    x = 13,141.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.