Home / 18,800.10-28,232.55-18,216.90

Finding the Fourth Proportional to 18,800.10, 28,232.55 and 18,216.90

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Solution

The fourth proportional to 18,800.10, 28,232.55 and 18,216.90 is: 27,356.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.10 : 28,232.55 = 18,216.90 : x
  2. Step 2: Convert to fraction form
    18,800.10/28,232.55 = 18,216.90/x
  3. Step 3: Cross multiply
    18,800.10x = 28,232.55 × 18,216.90
  4. Step 4: Simplify right side
    18,800.10x = 514,309,540.10
  5. Step 5: Solve for x
    x = 514,309,540.10/18,800.10
  6. Step 6: Final answer
    x = 27,356.74

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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.