Home / 20,712.10-31,050.68-9,016.50

Finding the Fourth Proportional to 20,712.10, 31,050.68 and 9,016.50

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Solution

The fourth proportional to 20,712.10, 31,050.68 and 9,016.50 is: 13,517.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.10 : 31,050.68 = 9,016.50 : x
  2. Step 2: Convert to fraction form
    20,712.10/31,050.68 = 9,016.50/x
  3. Step 3: Cross multiply
    20,712.10x = 31,050.68 × 9,016.50
  4. Step 4: Simplify right side
    20,712.10x = 279,968,456.22
  5. Step 5: Solve for x
    x = 279,968,456.22/20,712.10
  6. Step 6: Final answer
    x = 13,517.14

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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.