Home / 21,268.13-31,865.75-15,016.96

Finding the Fourth Proportional to 21,268.13, 31,865.75 and 15,016.96

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Solution

The fourth proportional to 21,268.13, 31,865.75 and 15,016.96 is: 22,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.13 : 31,865.75 = 15,016.96 : x
  2. Step 2: Convert to fraction form
    21,268.13/31,865.75 = 15,016.96/x
  3. Step 3: Cross multiply
    21,268.13x = 31,865.75 × 15,016.96
  4. Step 4: Simplify right side
    21,268.13x = 478,526,458.71
  5. Step 5: Solve for x
    x = 478,526,458.71/21,268.13
  6. Step 6: Final answer
    x = 22,499.70

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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.