Home / 18,883.10-28,181-18,120.08

Finding the Fourth Proportional to 18,883.10, 28,181 and 18,120.08

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Solution

The fourth proportional to 18,883.10, 28,181 and 18,120.08 is: 27,042.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.10 : 28,181 = 18,120.08 : x
  2. Step 2: Convert to fraction form
    18,883.10/28,181 = 18,120.08/x
  3. Step 3: Cross multiply
    18,883.10x = 28,181 × 18,120.08
  4. Step 4: Simplify right side
    18,883.10x = 510,641,974.48
  5. Step 5: Solve for x
    x = 510,641,974.48/18,883.10
  6. Step 6: Final answer
    x = 27,042.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.