Home / 20,001.60-27,613.20-12,045.78

Finding the Fourth Proportional to 20,001.60, 27,613.20 and 12,045.78

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Solution

The fourth proportional to 20,001.60, 27,613.20 and 12,045.78 is: 16,629.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001.60 : 27,613.20 = 12,045.78 : x
  2. Step 2: Convert to fraction form
    20,001.60/27,613.20 = 12,045.78/x
  3. Step 3: Cross multiply
    20,001.60x = 27,613.20 × 12,045.78
  4. Step 4: Simplify right side
    20,001.60x = 332,622,532.30
  5. Step 5: Solve for x
    x = 332,622,532.30/20,001.60
  6. Step 6: Final answer
    x = 16,629.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.