Home / 20,423.60-30,592.20-18,234.80

Finding the Fourth Proportional to 20,423.60, 30,592.20 and 18,234.80

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Solution

The fourth proportional to 20,423.60, 30,592.20 and 18,234.80 is: 27,313.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.60 : 30,592.20 = 18,234.80 : x
  2. Step 2: Convert to fraction form
    20,423.60/30,592.20 = 18,234.80/x
  3. Step 3: Cross multiply
    20,423.60x = 30,592.20 × 18,234.80
  4. Step 4: Simplify right side
    20,423.60x = 557,842,648.56
  5. Step 5: Solve for x
    x = 557,842,648.56/20,423.60
  6. Step 6: Final answer
    x = 27,313.63

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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.