Home / 21,456.32-32,163.00-10,191.81

Finding the Fourth Proportional to 21,456.32, 32,163.00 and 10,191.81

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Solution

The fourth proportional to 21,456.32, 32,163.00 and 10,191.81 is: 15,277.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456.32 : 32,163.00 = 10,191.81 : x
  2. Step 2: Convert to fraction form
    21,456.32/32,163.00 = 10,191.81/x
  3. Step 3: Cross multiply
    21,456.32x = 32,163.00 × 10,191.81
  4. Step 4: Simplify right side
    21,456.32x = 327,799,115.17
  5. Step 5: Solve for x
    x = 327,799,115.17/21,456.32
  6. Step 6: Final answer
    x = 15,277.51

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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.