Home / 10,078.85-15,113.61-5,398.04

Finding the Fourth Proportional to 10,078.85, 15,113.61 and 5,398.04

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Solution

The fourth proportional to 10,078.85, 15,113.61 and 5,398.04 is: 8,094.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078.85 : 15,113.61 = 5,398.04 : x
  2. Step 2: Convert to fraction form
    10,078.85/15,113.61 = 5,398.04/x
  3. Step 3: Cross multiply
    10,078.85x = 15,113.61 × 5,398.04
  4. Step 4: Simplify right side
    10,078.85x = 81,583,795.76
  5. Step 5: Solve for x
    x = 81,583,795.76/10,078.85
  6. Step 6: Final answer
    x = 8,094.56

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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.