Home / 10,390.80-15,580.66-4,540.56

Finding the Fourth Proportional to 10,390.80, 15,580.66 and 4,540.56

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Solution

The fourth proportional to 10,390.80, 15,580.66 and 4,540.56 is: 6,808.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.80 : 15,580.66 = 4,540.56 : x
  2. Step 2: Convert to fraction form
    10,390.80/15,580.66 = 4,540.56/x
  3. Step 3: Cross multiply
    10,390.80x = 15,580.66 × 4,540.56
  4. Step 4: Simplify right side
    10,390.80x = 70,744,921.57
  5. Step 5: Solve for x
    x = 70,744,921.57/10,390.80
  6. Step 6: Final answer
    x = 6,808.42

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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.