Home / 28,672.20-43,008.30-18,174.60

Finding the Fourth Proportional to 28,672.20, 43,008.30 and 18,174.60

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Solution

The fourth proportional to 28,672.20, 43,008.30 and 18,174.60 is: 27,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,672.20 : 43,008.30 = 18,174.60 : x
  2. Step 2: Convert to fraction form
    28,672.20/43,008.30 = 18,174.60/x
  3. Step 3: Cross multiply
    28,672.20x = 43,008.30 × 18,174.60
  4. Step 4: Simplify right side
    28,672.20x = 781,658,649.18
  5. Step 5: Solve for x
    x = 781,658,649.18/28,672.20
  6. Step 6: Final answer
    x = 27,261.90

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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.