Home / 28,103.15-42,156.15-9,382.43

Finding the Fourth Proportional to 28,103.15, 42,156.15 and 9,382.43

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Solution

The fourth proportional to 28,103.15, 42,156.15 and 9,382.43 is: 14,074.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.15 : 42,156.15 = 9,382.43 : x
  2. Step 2: Convert to fraction form
    28,103.15/42,156.15 = 9,382.43/x
  3. Step 3: Cross multiply
    28,103.15x = 42,156.15 × 9,382.43
  4. Step 4: Simplify right side
    28,103.15x = 395,527,196.65
  5. Step 5: Solve for x
    x = 395,527,196.65/28,103.15
  6. Step 6: Final answer
    x = 14,074.12

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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.