Home / 13,112.18-18,101.49-8,885.57

Finding the Fourth Proportional to 13,112.18, 18,101.49 and 8,885.57

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Solution

The fourth proportional to 13,112.18, 18,101.49 and 8,885.57 is: 12,266.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.18 : 18,101.49 = 8,885.57 : x
  2. Step 2: Convert to fraction form
    13,112.18/18,101.49 = 8,885.57/x
  3. Step 3: Cross multiply
    13,112.18x = 18,101.49 × 8,885.57
  4. Step 4: Simplify right side
    13,112.18x = 160,841,965.99
  5. Step 5: Solve for x
    x = 160,841,965.99/13,112.18
  6. Step 6: Final answer
    x = 12,266.61

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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.