Home / 20,376.60-30,582.90-12,046.20

Finding the Fourth Proportional to 20,376.60, 30,582.90 and 12,046.20

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Solution

The fourth proportional to 20,376.60, 30,582.90 and 12,046.20 is: 18,079.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.60 : 30,582.90 = 12,046.20 : x
  2. Step 2: Convert to fraction form
    20,376.60/30,582.90 = 12,046.20/x
  3. Step 3: Cross multiply
    20,376.60x = 30,582.90 × 12,046.20
  4. Step 4: Simplify right side
    20,376.60x = 368,407,729.98
  5. Step 5: Solve for x
    x = 368,407,729.98/20,376.60
  6. Step 6: Final answer
    x = 18,079.94

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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.