Home / 12,177.06-16,805.10-7,139.44

Finding the Fourth Proportional to 12,177.06, 16,805.10 and 7,139.44

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Solution

The fourth proportional to 12,177.06, 16,805.10 and 7,139.44 is: 9,852.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,177.06 : 16,805.10 = 7,139.44 : x
  2. Step 2: Convert to fraction form
    12,177.06/16,805.10 = 7,139.44/x
  3. Step 3: Cross multiply
    12,177.06x = 16,805.10 × 7,139.44
  4. Step 4: Simplify right side
    12,177.06x = 119,979,003.14
  5. Step 5: Solve for x
    x = 119,979,003.14/12,177.06
  6. Step 6: Final answer
    x = 9,852.87

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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.