Home / 12,109.94-16,691.15-9,237.68

Finding the Fourth Proportional to 12,109.94, 16,691.15 and 9,237.68

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Solution

The fourth proportional to 12,109.94, 16,691.15 and 9,237.68 is: 12,732.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.94 : 16,691.15 = 9,237.68 : x
  2. Step 2: Convert to fraction form
    12,109.94/16,691.15 = 9,237.68/x
  3. Step 3: Cross multiply
    12,109.94x = 16,691.15 × 9,237.68
  4. Step 4: Simplify right side
    12,109.94x = 154,187,372.89
  5. Step 5: Solve for x
    x = 154,187,372.89/12,109.94
  6. Step 6: Final answer
    x = 12,732.30

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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.