Home / 19,788.40-29,689.52-8,695.95

Finding the Fourth Proportional to 19,788.40, 29,689.52 and 8,695.95

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Solution

The fourth proportional to 19,788.40, 29,689.52 and 8,695.95 is: 13,046.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.40 : 29,689.52 = 8,695.95 : x
  2. Step 2: Convert to fraction form
    19,788.40/29,689.52 = 8,695.95/x
  3. Step 3: Cross multiply
    19,788.40x = 29,689.52 × 8,695.95
  4. Step 4: Simplify right side
    19,788.40x = 258,178,581.44
  5. Step 5: Solve for x
    x = 258,178,581.44/19,788.40
  6. Step 6: Final answer
    x = 13,046.97

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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.