Home / 20,117.10-30,175.65-11,801.10

Finding the Fourth Proportional to 20,117.10, 30,175.65 and 11,801.10

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Solution

The fourth proportional to 20,117.10, 30,175.65 and 11,801.10 is: 17,701.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.10 : 30,175.65 = 11,801.10 : x
  2. Step 2: Convert to fraction form
    20,117.10/30,175.65 = 11,801.10/x
  3. Step 3: Cross multiply
    20,117.10x = 30,175.65 × 11,801.10
  4. Step 4: Simplify right side
    20,117.10x = 356,105,863.22
  5. Step 5: Solve for x
    x = 356,105,863.22/20,117.10
  6. Step 6: Final answer
    x = 17,701.65

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Similar ratio
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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.