Home / 20,610.18-30,896.10-8,127.90

Finding the Fourth Proportional to 20,610.18, 30,896.10 and 8,127.90

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Solution

The fourth proportional to 20,610.18, 30,896.10 and 8,127.90 is: 12,184.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.18 : 30,896.10 = 8,127.90 : x
  2. Step 2: Convert to fraction form
    20,610.18/30,896.10 = 8,127.90/x
  3. Step 3: Cross multiply
    20,610.18x = 30,896.10 × 8,127.90
  4. Step 4: Simplify right side
    20,610.18x = 251,120,411.19
  5. Step 5: Solve for x
    x = 251,120,411.19/20,610.18
  6. Step 6: Final answer
    x = 12,184.29

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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.