Home / 20,169.10-30,253.65-19,780.30

Finding the Fourth Proportional to 20,169.10, 30,253.65 and 19,780.30

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Solution

The fourth proportional to 20,169.10, 30,253.65 and 19,780.30 is: 29,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.10 : 30,253.65 = 19,780.30 : x
  2. Step 2: Convert to fraction form
    20,169.10/30,253.65 = 19,780.30/x
  3. Step 3: Cross multiply
    20,169.10x = 30,253.65 × 19,780.30
  4. Step 4: Simplify right side
    20,169.10x = 598,426,273.10
  5. Step 5: Solve for x
    x = 598,426,273.10/20,169.10
  6. Step 6: Final answer
    x = 29,670.45

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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.