Home / 28,872.90-43,305.71-9,151.65

Finding the Fourth Proportional to 28,872.90, 43,305.71 and 9,151.65

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Solution

The fourth proportional to 28,872.90, 43,305.71 and 9,151.65 is: 13,726.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,872.90 : 43,305.71 = 9,151.65 : x
  2. Step 2: Convert to fraction form
    28,872.90/43,305.71 = 9,151.65/x
  3. Step 3: Cross multiply
    28,872.90x = 43,305.71 × 9,151.65
  4. Step 4: Simplify right side
    28,872.90x = 396,318,655.16
  5. Step 5: Solve for x
    x = 396,318,655.16/28,872.90
  6. Step 6: Final answer
    x = 13,726.32

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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.