Home / 21,268.20-31,902.70-9,259.14

Finding the Fourth Proportional to 21,268.20, 31,902.70 and 9,259.14

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Solution

The fourth proportional to 21,268.20, 31,902.70 and 9,259.14 is: 13,888.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.20 : 31,902.70 = 9,259.14 : x
  2. Step 2: Convert to fraction form
    21,268.20/31,902.70 = 9,259.14/x
  3. Step 3: Cross multiply
    21,268.20x = 31,902.70 × 9,259.14
  4. Step 4: Simplify right side
    21,268.20x = 295,391,565.68
  5. Step 5: Solve for x
    x = 295,391,565.68/21,268.20
  6. Step 6: Final answer
    x = 13,888.88

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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.