Home / 10,271.72-15,390.66-4,343.78

Finding the Fourth Proportional to 10,271.72, 15,390.66 and 4,343.78

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Solution

The fourth proportional to 10,271.72, 15,390.66 and 4,343.78 is: 6,508.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,271.72 : 15,390.66 = 4,343.78 : x
  2. Step 2: Convert to fraction form
    10,271.72/15,390.66 = 4,343.78/x
  3. Step 3: Cross multiply
    10,271.72x = 15,390.66 × 4,343.78
  4. Step 4: Simplify right side
    10,271.72x = 66,853,641.09
  5. Step 5: Solve for x
    x = 66,853,641.09/10,271.72
  6. Step 6: Final answer
    x = 6,508.51

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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.