Home / 20,512.20-30,695.40-14,242.80

Finding the Fourth Proportional to 20,512.20, 30,695.40 and 14,242.80

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Solution

The fourth proportional to 20,512.20, 30,695.40 and 14,242.80 is: 21,313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.20 : 30,695.40 = 14,242.80 : x
  2. Step 2: Convert to fraction form
    20,512.20/30,695.40 = 14,242.80/x
  3. Step 3: Cross multiply
    20,512.20x = 30,695.40 × 14,242.80
  4. Step 4: Simplify right side
    20,512.20x = 437,188,443.12
  5. Step 5: Solve for x
    x = 437,188,443.12/20,512.20
  6. Step 6: Final answer
    x = 21,313.58

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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.