Home / 28,375.04-42,580.92-12,791.72

Finding the Fourth Proportional to 28,375.04, 42,580.92 and 12,791.72

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Solution

The fourth proportional to 28,375.04, 42,580.92 and 12,791.72 is: 19,195.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.04 : 42,580.92 = 12,791.72 : x
  2. Step 2: Convert to fraction form
    28,375.04/42,580.92 = 12,791.72/x
  3. Step 3: Cross multiply
    28,375.04x = 42,580.92 × 12,791.72
  4. Step 4: Simplify right side
    28,375.04x = 544,683,205.98
  5. Step 5: Solve for x
    x = 544,683,205.98/28,375.04
  6. Step 6: Final answer
    x = 19,195.86

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1.5x scale

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.