Home / 28,216.20-42,324.30-18,366.60

Finding the Fourth Proportional to 28,216.20, 42,324.30 and 18,366.60

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Solution

The fourth proportional to 28,216.20, 42,324.30 and 18,366.60 is: 27,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.20 : 42,324.30 = 18,366.60 : x
  2. Step 2: Convert to fraction form
    28,216.20/42,324.30 = 18,366.60/x
  3. Step 3: Cross multiply
    28,216.20x = 42,324.30 × 18,366.60
  4. Step 4: Simplify right side
    28,216.20x = 777,353,488.38
  5. Step 5: Solve for x
    x = 777,353,488.38/28,216.20
  6. Step 6: Final answer
    x = 27,549.90

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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.