Home / 13,290.73-18,348.84-8,820.54

Finding the Fourth Proportional to 13,290.73, 18,348.84 and 8,820.54

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Solution

The fourth proportional to 13,290.73, 18,348.84 and 8,820.54 is: 12,177.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.73 : 18,348.84 = 8,820.54 : x
  2. Step 2: Convert to fraction form
    13,290.73/18,348.84 = 8,820.54/x
  3. Step 3: Cross multiply
    13,290.73x = 18,348.84 × 8,820.54
  4. Step 4: Simplify right side
    13,290.73x = 161,846,677.17
  5. Step 5: Solve for x
    x = 161,846,677.17/13,290.73
  6. Step 6: Final answer
    x = 12,177.41

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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.