Home / 39,691.45-59,521.78-19,956.21

Finding the Fourth Proportional to 39,691.45, 59,521.78 and 19,956.21

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Solution

The fourth proportional to 39,691.45, 59,521.78 and 19,956.21 is: 29,926.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,691.45 : 59,521.78 = 19,956.21 : x
  2. Step 2: Convert to fraction form
    39,691.45/59,521.78 = 19,956.21/x
  3. Step 3: Cross multiply
    39,691.45x = 59,521.78 × 19,956.21
  4. Step 4: Simplify right side
    39,691.45x = 1,187,829,141.25
  5. Step 5: Solve for x
    x = 1,187,829,141.25/39,691.45
  6. Step 6: Final answer
    x = 29,926.57

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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.