Home / 18,010.57-27,015.51-8,142.95

Finding the Fourth Proportional to 18,010.57, 27,015.51 and 8,142.95

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Solution

The fourth proportional to 18,010.57, 27,015.51 and 8,142.95 is: 12,214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,010.57 : 27,015.51 = 8,142.95 : x
  2. Step 2: Convert to fraction form
    18,010.57/27,015.51 = 8,142.95/x
  3. Step 3: Cross multiply
    18,010.57x = 27,015.51 × 8,142.95
  4. Step 4: Simplify right side
    18,010.57x = 219,985,947.15
  5. Step 5: Solve for x
    x = 219,985,947.15/18,010.57
  6. Step 6: Final answer
    x = 12,214.27

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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.