Home / 12,279.05-16,948.82-7,242.88

Finding the Fourth Proportional to 12,279.05, 16,948.82 and 7,242.88

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Solution

The fourth proportional to 12,279.05, 16,948.82 and 7,242.88 is: 9,997.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.05 : 16,948.82 = 7,242.88 : x
  2. Step 2: Convert to fraction form
    12,279.05/16,948.82 = 7,242.88/x
  3. Step 3: Cross multiply
    12,279.05x = 16,948.82 × 7,242.88
  4. Step 4: Simplify right side
    12,279.05x = 122,758,148.44
  5. Step 5: Solve for x
    x = 122,758,148.44/12,279.05
  6. Step 6: Final answer
    x = 9,997.37

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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.