Home / 28,563.62-42,854.18-12,781.94

Finding the Fourth Proportional to 28,563.62, 42,854.18 and 12,781.94

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Solution

The fourth proportional to 28,563.62, 42,854.18 and 12,781.94 is: 19,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.62 : 42,854.18 = 12,781.94 : x
  2. Step 2: Convert to fraction form
    28,563.62/42,854.18 = 12,781.94/x
  3. Step 3: Cross multiply
    28,563.62x = 42,854.18 × 12,781.94
  4. Step 4: Simplify right side
    28,563.62x = 547,759,375.19
  5. Step 5: Solve for x
    x = 547,759,375.19/28,563.62
  6. Step 6: Final answer
    x = 19,176.82

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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.