Home / 20,175.30-30,248.55-11,412.90

Finding the Fourth Proportional to 20,175.30, 30,248.55 and 11,412.90

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Solution

The fourth proportional to 20,175.30, 30,248.55 and 11,412.90 is: 17,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.30 : 30,248.55 = 11,412.90 : x
  2. Step 2: Convert to fraction form
    20,175.30/30,248.55 = 11,412.90/x
  3. Step 3: Cross multiply
    20,175.30x = 30,248.55 × 11,412.90
  4. Step 4: Simplify right side
    20,175.30x = 345,223,676.30
  5. Step 5: Solve for x
    x = 345,223,676.30/20,175.30
  6. Step 6: Final answer
    x = 17,111.20

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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.