Home / 30,196.20-45,276.30-18,517.80

Finding the Fourth Proportional to 30,196.20, 45,276.30 and 18,517.80

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Solution

The fourth proportional to 30,196.20, 45,276.30 and 18,517.80 is: 27,765.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,196.20 : 45,276.30 = 18,517.80 : x
  2. Step 2: Convert to fraction form
    30,196.20/45,276.30 = 18,517.80/x
  3. Step 3: Cross multiply
    30,196.20x = 45,276.30 × 18,517.80
  4. Step 4: Simplify right side
    30,196.20x = 838,417,468.14
  5. Step 5: Solve for x
    x = 838,417,468.14/30,196.20
  6. Step 6: Final answer
    x = 27,765.66

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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.