Home / 28,263.90-42,385.94-11,391.88

Finding the Fourth Proportional to 28,263.90, 42,385.94 and 11,391.88

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Solution

The fourth proportional to 28,263.90, 42,385.94 and 11,391.88 is: 17,083.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.90 : 42,385.94 = 11,391.88 : x
  2. Step 2: Convert to fraction form
    28,263.90/42,385.94 = 11,391.88/x
  3. Step 3: Cross multiply
    28,263.90x = 42,385.94 × 11,391.88
  4. Step 4: Simplify right side
    28,263.90x = 482,855,449.84
  5. Step 5: Solve for x
    x = 482,855,449.84/28,263.90
  6. Step 6: Final answer
    x = 17,083.82

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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.