Home / 12,109.19-16,690.12-9,236.93

Finding the Fourth Proportional to 12,109.19, 16,690.12 and 9,236.93

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Solution

The fourth proportional to 12,109.19, 16,690.12 and 9,236.93 is: 12,731.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.19 : 16,690.12 = 9,236.93 : x
  2. Step 2: Convert to fraction form
    12,109.19/16,690.12 = 9,236.93/x
  3. Step 3: Cross multiply
    12,109.19x = 16,690.12 × 9,236.93
  4. Step 4: Simplify right side
    12,109.19x = 154,165,363.59
  5. Step 5: Solve for x
    x = 154,165,363.59/12,109.19
  6. Step 6: Final answer
    x = 12,731.27

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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.