Home / 20,109.18-30,168.90-14,197.59

Finding the Fourth Proportional to 20,109.18, 30,168.90 and 14,197.59

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Solution

The fourth proportional to 20,109.18, 30,168.90 and 14,197.59 is: 21,299.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.18 : 30,168.90 = 14,197.59 : x
  2. Step 2: Convert to fraction form
    20,109.18/30,168.90 = 14,197.59/x
  3. Step 3: Cross multiply
    20,109.18x = 30,168.90 × 14,197.59
  4. Step 4: Simplify right side
    20,109.18x = 428,325,486.61
  5. Step 5: Solve for x
    x = 428,325,486.61/20,109.18
  6. Step 6: Final answer
    x = 21,299.99

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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.