Home / 20,732.40-31,102.02-8,252.50

Finding the Fourth Proportional to 20,732.40, 31,102.02 and 8,252.50

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Solution

The fourth proportional to 20,732.40, 31,102.02 and 8,252.50 is: 12,380.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.40 : 31,102.02 = 8,252.50 : x
  2. Step 2: Convert to fraction form
    20,732.40/31,102.02 = 8,252.50/x
  3. Step 3: Cross multiply
    20,732.40x = 31,102.02 × 8,252.50
  4. Step 4: Simplify right side
    20,732.40x = 256,669,420.05
  5. Step 5: Solve for x
    x = 256,669,420.05/20,732.40
  6. Step 6: Final answer
    x = 12,380.11

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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.