Home / 15,129.07-22,591.61-12,361.21

Finding the Fourth Proportional to 15,129.07, 22,591.61 and 12,361.21

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Solution

The fourth proportional to 15,129.07, 22,591.61 and 12,361.21 is: 18,458.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.07 : 22,591.61 = 12,361.21 : x
  2. Step 2: Convert to fraction form
    15,129.07/22,591.61 = 12,361.21/x
  3. Step 3: Cross multiply
    15,129.07x = 22,591.61 × 12,361.21
  4. Step 4: Simplify right side
    15,129.07x = 279,259,635.45
  5. Step 5: Solve for x
    x = 279,259,635.45/15,129.07
  6. Step 6: Final answer
    x = 18,458.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.