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Finding the Fourth Proportional to 20,182.80, 30,241.80 and 19,016.40

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Solution

The fourth proportional to 20,182.80, 30,241.80 and 19,016.40 is: 28,494.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,182.80 : 30,241.80 = 19,016.40 : x
  2. Step 2: Convert to fraction form
    20,182.80/30,241.80 = 19,016.40/x
  3. Step 3: Cross multiply
    20,182.80x = 30,241.80 × 19,016.40
  4. Step 4: Simplify right side
    20,182.80x = 575,090,165.52
  5. Step 5: Solve for x
    x = 575,090,165.52/20,182.80
  6. Step 6: Final answer
    x = 28,494.07

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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.