Home / 19,790.61-29,685.87-8,103.84

Finding the Fourth Proportional to 19,790.61, 29,685.87 and 8,103.84

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Solution

The fourth proportional to 19,790.61, 29,685.87 and 8,103.84 is: 12,155.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.61 : 29,685.87 = 8,103.84 : x
  2. Step 2: Convert to fraction form
    19,790.61/29,685.87 = 8,103.84/x
  3. Step 3: Cross multiply
    19,790.61x = 29,685.87 × 8,103.84
  4. Step 4: Simplify right side
    19,790.61x = 240,569,540.74
  5. Step 5: Solve for x
    x = 240,569,540.74/19,790.61
  6. Step 6: Final answer
    x = 12,155.74

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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.