Home / 19,819.71-29,671.25-13,229.55

Finding the Fourth Proportional to 19,819.71, 29,671.25 and 13,229.55

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Solution

The fourth proportional to 19,819.71, 29,671.25 and 13,229.55 is: 19,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.71 : 29,671.25 = 13,229.55 : x
  2. Step 2: Convert to fraction form
    19,819.71/29,671.25 = 13,229.55/x
  3. Step 3: Cross multiply
    19,819.71x = 29,671.25 × 13,229.55
  4. Step 4: Simplify right side
    19,819.71x = 392,537,219.29
  5. Step 5: Solve for x
    x = 392,537,219.29/19,819.71
  6. Step 6: Final answer
    x = 19,805.40

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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.