Home / 10,287.14-15,430.20-3,623.97

Finding the Fourth Proportional to 10,287.14, 15,430.20 and 3,623.97

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Solution

The fourth proportional to 10,287.14, 15,430.20 and 3,623.97 is: 5,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.14 : 15,430.20 = 3,623.97 : x
  2. Step 2: Convert to fraction form
    10,287.14/15,430.20 = 3,623.97/x
  3. Step 3: Cross multiply
    10,287.14x = 15,430.20 × 3,623.97
  4. Step 4: Simplify right side
    10,287.14x = 55,918,581.89
  5. Step 5: Solve for x
    x = 55,918,581.89/10,287.14
  6. Step 6: Final answer
    x = 5,435.78

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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.