Home / 13,251.79-18,290.04-8,775.73

Finding the Fourth Proportional to 13,251.79, 18,290.04 and 8,775.73

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Solution

The fourth proportional to 13,251.79, 18,290.04 and 8,775.73 is: 12,112.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.79 : 18,290.04 = 8,775.73 : x
  2. Step 2: Convert to fraction form
    13,251.79/18,290.04 = 8,775.73/x
  3. Step 3: Cross multiply
    13,251.79x = 18,290.04 × 8,775.73
  4. Step 4: Simplify right side
    13,251.79x = 160,508,452.73
  5. Step 5: Solve for x
    x = 160,508,452.73/13,251.79
  6. Step 6: Final answer
    x = 12,112.21

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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.