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Finding the Fourth Proportional to 10,266.82, 15,400.19 and 7,930.22

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Solution

The fourth proportional to 10,266.82, 15,400.19 and 7,930.22 is: 11,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,266.82 : 15,400.19 = 7,930.22 : x
  2. Step 2: Convert to fraction form
    10,266.82/15,400.19 = 7,930.22/x
  3. Step 3: Cross multiply
    10,266.82x = 15,400.19 × 7,930.22
  4. Step 4: Simplify right side
    10,266.82x = 122,126,837.57
  5. Step 5: Solve for x
    x = 122,126,837.57/10,266.82
  6. Step 6: Final answer
    x = 11,895.30

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1.5x scale

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.