Home / 18,511.28-27,771.10-8,645.18

Finding the Fourth Proportional to 18,511.28, 27,771.10 and 8,645.18

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Solution

The fourth proportional to 18,511.28, 27,771.10 and 8,645.18 is: 12,969.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.28 : 27,771.10 = 8,645.18 : x
  2. Step 2: Convert to fraction form
    18,511.28/27,771.10 = 8,645.18/x
  3. Step 3: Cross multiply
    18,511.28x = 27,771.10 × 8,645.18
  4. Step 4: Simplify right side
    18,511.28x = 240,086,202.67
  5. Step 5: Solve for x
    x = 240,086,202.67/18,511.28
  6. Step 6: Final answer
    x = 12,969.72

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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.