Home / 28,922.10-43,361.15-20,013.75

Finding the Fourth Proportional to 28,922.10, 43,361.15 and 20,013.75

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Solution

The fourth proportional to 28,922.10, 43,361.15 and 20,013.75 is: 30,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,922.10 : 43,361.15 = 20,013.75 : x
  2. Step 2: Convert to fraction form
    28,922.10/43,361.15 = 20,013.75/x
  3. Step 3: Cross multiply
    28,922.10x = 43,361.15 × 20,013.75
  4. Step 4: Simplify right side
    28,922.10x = 867,819,115.74
  5. Step 5: Solve for x
    x = 867,819,115.74/28,922.10
  6. Step 6: Final answer
    x = 30,005.40

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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.