Home / 21,140.06-31,661.33-15,179.87

Finding the Fourth Proportional to 21,140.06, 31,661.33 and 15,179.87

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Solution

The fourth proportional to 21,140.06, 31,661.33 and 15,179.87 is: 22,734.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.06 : 31,661.33 = 15,179.87 : x
  2. Step 2: Convert to fraction form
    21,140.06/31,661.33 = 15,179.87/x
  3. Step 3: Cross multiply
    21,140.06x = 31,661.33 × 15,179.87
  4. Step 4: Simplify right side
    21,140.06x = 480,614,639.22
  5. Step 5: Solve for x
    x = 480,614,639.22/21,140.06
  6. Step 6: Final answer
    x = 22,734.79

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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.