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Finding the Fourth Proportional to 22,691.80, 34,037.84 and 7,890.36

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Solution

The fourth proportional to 22,691.80, 34,037.84 and 7,890.36 is: 11,835.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,691.80 : 34,037.84 = 7,890.36 : x
  2. Step 2: Convert to fraction form
    22,691.80/34,037.84 = 7,890.36/x
  3. Step 3: Cross multiply
    22,691.80x = 34,037.84 × 7,890.36
  4. Step 4: Simplify right side
    22,691.80x = 268,570,811.22
  5. Step 5: Solve for x
    x = 268,570,811.22/22,691.80
  6. Step 6: Final answer
    x = 11,835.59

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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.