Home / 20,699.24-31,049.13-9,012.02

Finding the Fourth Proportional to 20,699.24, 31,049.13 and 9,012.02

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Solution

The fourth proportional to 20,699.24, 31,049.13 and 9,012.02 is: 13,518.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.24 : 31,049.13 = 9,012.02 : x
  2. Step 2: Convert to fraction form
    20,699.24/31,049.13 = 9,012.02/x
  3. Step 3: Cross multiply
    20,699.24x = 31,049.13 × 9,012.02
  4. Step 4: Simplify right side
    20,699.24x = 279,815,380.54
  5. Step 5: Solve for x
    x = 279,815,380.54/20,699.24
  6. Step 6: Final answer
    x = 13,518.15

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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.