Home / 12,712.23-19,072.85-5,691.69

Finding the Fourth Proportional to 12,712.23, 19,072.85 and 5,691.69

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Solution

The fourth proportional to 12,712.23, 19,072.85 and 5,691.69 is: 8,539.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.23 : 19,072.85 = 5,691.69 : x
  2. Step 2: Convert to fraction form
    12,712.23/19,072.85 = 5,691.69/x
  3. Step 3: Cross multiply
    12,712.23x = 19,072.85 × 5,691.69
  4. Step 4: Simplify right side
    12,712.23x = 108,556,721.16
  5. Step 5: Solve for x
    x = 108,556,721.16/12,712.23
  6. Step 6: Final answer
    x = 8,539.55

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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.