Home / 20,995.11-31,474.80-9,301.95

Finding the Fourth Proportional to 20,995.11, 31,474.80 and 9,301.95

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Solution

The fourth proportional to 20,995.11, 31,474.80 and 9,301.95 is: 13,945.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.11 : 31,474.80 = 9,301.95 : x
  2. Step 2: Convert to fraction form
    20,995.11/31,474.80 = 9,301.95/x
  3. Step 3: Cross multiply
    20,995.11x = 31,474.80 × 9,301.95
  4. Step 4: Simplify right side
    20,995.11x = 292,777,015.86
  5. Step 5: Solve for x
    x = 292,777,015.86/20,995.11
  6. Step 6: Final answer
    x = 13,945.01

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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.