Home / 12,691.55-19,026.38-6,122.36

Finding the Fourth Proportional to 12,691.55, 19,026.38 and 6,122.36

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Solution

The fourth proportional to 12,691.55, 19,026.38 and 6,122.36 is: 9,178.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.55 : 19,026.38 = 6,122.36 : x
  2. Step 2: Convert to fraction form
    12,691.55/19,026.38 = 6,122.36/x
  3. Step 3: Cross multiply
    12,691.55x = 19,026.38 × 6,122.36
  4. Step 4: Simplify right side
    12,691.55x = 116,486,410.73
  5. Step 5: Solve for x
    x = 116,486,410.73/12,691.55
  6. Step 6: Final answer
    x = 9,178.26

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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.