Home / 20,448.11-30,657.80-7,957.61

Finding the Fourth Proportional to 20,448.11, 30,657.80 and 7,957.61

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Solution

The fourth proportional to 20,448.11, 30,657.80 and 7,957.61 is: 11,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.11 : 30,657.80 = 7,957.61 : x
  2. Step 2: Convert to fraction form
    20,448.11/30,657.80 = 7,957.61/x
  3. Step 3: Cross multiply
    20,448.11x = 30,657.80 × 7,957.61
  4. Step 4: Simplify right side
    20,448.11x = 243,962,622.78
  5. Step 5: Solve for x
    x = 243,962,622.78/20,448.11
  6. Step 6: Final answer
    x = 11,930.82

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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.