Home / 12,819.24-17,691.30-7,231.08

Finding the Fourth Proportional to 12,819.24, 17,691.30 and 7,231.08

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Solution

The fourth proportional to 12,819.24, 17,691.30 and 7,231.08 is: 9,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.24 : 17,691.30 = 7,231.08 : x
  2. Step 2: Convert to fraction form
    12,819.24/17,691.30 = 7,231.08/x
  3. Step 3: Cross multiply
    12,819.24x = 17,691.30 × 7,231.08
  4. Step 4: Simplify right side
    12,819.24x = 127,927,205.60
  5. Step 5: Solve for x
    x = 127,927,205.60/12,819.24
  6. Step 6: Final answer
    x = 9,979.31

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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.