Home / 28,081.80-42,108.61-9,355.25

Finding the Fourth Proportional to 28,081.80, 42,108.61 and 9,355.25

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Solution

The fourth proportional to 28,081.80, 42,108.61 and 9,355.25 is: 14,028.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.80 : 42,108.61 = 9,355.25 : x
  2. Step 2: Convert to fraction form
    28,081.80/42,108.61 = 9,355.25/x
  3. Step 3: Cross multiply
    28,081.80x = 42,108.61 × 9,355.25
  4. Step 4: Simplify right side
    28,081.80x = 393,936,445.04
  5. Step 5: Solve for x
    x = 393,936,445.04/28,081.80
  6. Step 6: Final answer
    x = 14,028.18

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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.