Home / 11,331.72-15,636.38-6,857.55

Finding the Fourth Proportional to 11,331.72, 15,636.38 and 6,857.55

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Solution

The fourth proportional to 11,331.72, 15,636.38 and 6,857.55 is: 9,462.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.72 : 15,636.38 = 6,857.55 : x
  2. Step 2: Convert to fraction form
    11,331.72/15,636.38 = 6,857.55/x
  3. Step 3: Cross multiply
    11,331.72x = 15,636.38 × 6,857.55
  4. Step 4: Simplify right side
    11,331.72x = 107,227,223.38
  5. Step 5: Solve for x
    x = 107,227,223.38/11,331.72
  6. Step 6: Final answer
    x = 9,462.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.