Home / 12,691.90-19,046.30-5,669.58

Finding the Fourth Proportional to 12,691.90, 19,046.30 and 5,669.58

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Solution

The fourth proportional to 12,691.90, 19,046.30 and 5,669.58 is: 8,508.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.90 : 19,046.30 = 5,669.58 : x
  2. Step 2: Convert to fraction form
    12,691.90/19,046.30 = 5,669.58/x
  3. Step 3: Cross multiply
    12,691.90x = 19,046.30 × 5,669.58
  4. Step 4: Simplify right side
    12,691.90x = 107,984,521.55
  5. Step 5: Solve for x
    x = 107,984,521.55/12,691.90
  6. Step 6: Final answer
    x = 8,508.14

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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.