Home / 20,164.10-30,246.15-18,122.90

Finding the Fourth Proportional to 20,164.10, 30,246.15 and 18,122.90

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Solution

The fourth proportional to 20,164.10, 30,246.15 and 18,122.90 is: 27,184.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,164.10 : 30,246.15 = 18,122.90 : x
  2. Step 2: Convert to fraction form
    20,164.10/30,246.15 = 18,122.90/x
  3. Step 3: Cross multiply
    20,164.10x = 30,246.15 × 18,122.90
  4. Step 4: Simplify right side
    20,164.10x = 548,147,951.84
  5. Step 5: Solve for x
    x = 548,147,951.84/20,164.10
  6. Step 6: Final answer
    x = 27,184.35

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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.