Home / 21,780.65-32,671.17-7,740.92

Finding the Fourth Proportional to 21,780.65, 32,671.17 and 7,740.92

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Solution

The fourth proportional to 21,780.65, 32,671.17 and 7,740.92 is: 11,611.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.65 : 32,671.17 = 7,740.92 : x
  2. Step 2: Convert to fraction form
    21,780.65/32,671.17 = 7,740.92/x
  3. Step 3: Cross multiply
    21,780.65x = 32,671.17 × 7,740.92
  4. Step 4: Simplify right side
    21,780.65x = 252,904,749.92
  5. Step 5: Solve for x
    x = 252,904,749.92/21,780.65
  6. Step 6: Final answer
    x = 11,611.44

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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.