Home / 28,216.60-38,921.22-18,158.12

Finding the Fourth Proportional to 28,216.60, 38,921.22 and 18,158.12

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Solution

The fourth proportional to 28,216.60, 38,921.22 and 18,158.12 is: 25,046.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.60 : 38,921.22 = 18,158.12 : x
  2. Step 2: Convert to fraction form
    28,216.60/38,921.22 = 18,158.12/x
  3. Step 3: Cross multiply
    28,216.60x = 38,921.22 × 18,158.12
  4. Step 4: Simplify right side
    28,216.60x = 706,736,183.31
  5. Step 5: Solve for x
    x = 706,736,183.31/28,216.60
  6. Step 6: Final answer
    x = 25,046.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.