Home / 12,691.24-19,038.68-3,926.84

Finding the Fourth Proportional to 12,691.24, 19,038.68 and 3,926.84

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Solution

The fourth proportional to 12,691.24, 19,038.68 and 3,926.84 is: 5,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.24 : 19,038.68 = 3,926.84 : x
  2. Step 2: Convert to fraction form
    12,691.24/19,038.68 = 3,926.84/x
  3. Step 3: Cross multiply
    12,691.24x = 19,038.68 × 3,926.84
  4. Step 4: Simplify right side
    12,691.24x = 74,761,850.17
  5. Step 5: Solve for x
    x = 74,761,850.17/12,691.24
  6. Step 6: Final answer
    x = 5,890.82

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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.