Home / 13,126.10-18,110.90-7,748.73

Finding the Fourth Proportional to 13,126.10, 18,110.90 and 7,748.73

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Solution

The fourth proportional to 13,126.10, 18,110.90 and 7,748.73 is: 10,691.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.10 : 18,110.90 = 7,748.73 : x
  2. Step 2: Convert to fraction form
    13,126.10/18,110.90 = 7,748.73/x
  3. Step 3: Cross multiply
    13,126.10x = 18,110.90 × 7,748.73
  4. Step 4: Simplify right side
    13,126.10x = 140,336,493.53
  5. Step 5: Solve for x
    x = 140,336,493.53/13,126.10
  6. Step 6: Final answer
    x = 10,691.41

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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.