Home / 18,921.87-28,373.22-11,026.89

Finding the Fourth Proportional to 18,921.87, 28,373.22 and 11,026.89

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Solution

The fourth proportional to 18,921.87, 28,373.22 and 11,026.89 is: 16,534.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.87 : 28,373.22 = 11,026.89 : x
  2. Step 2: Convert to fraction form
    18,921.87/28,373.22 = 11,026.89/x
  3. Step 3: Cross multiply
    18,921.87x = 28,373.22 × 11,026.89
  4. Step 4: Simplify right side
    18,921.87x = 312,868,375.89
  5. Step 5: Solve for x
    x = 312,868,375.89/18,921.87
  6. Step 6: Final answer
    x = 16,534.75

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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.