Home / 12,213.60-16,849.14-7,177.70

Finding the Fourth Proportional to 12,213.60, 16,849.14 and 7,177.70

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Solution

The fourth proportional to 12,213.60, 16,849.14 and 7,177.70 is: 9,901.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.60 : 16,849.14 = 7,177.70 : x
  2. Step 2: Convert to fraction form
    12,213.60/16,849.14 = 7,177.70/x
  3. Step 3: Cross multiply
    12,213.60x = 16,849.14 × 7,177.70
  4. Step 4: Simplify right side
    12,213.60x = 120,938,072.18
  5. Step 5: Solve for x
    x = 120,938,072.18/12,213.60
  6. Step 6: Final answer
    x = 9,901.92

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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.