Home / 12,945.33-17,867.51-9,164.57

Finding the Fourth Proportional to 12,945.33, 17,867.51 and 9,164.57

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Solution

The fourth proportional to 12,945.33, 17,867.51 and 9,164.57 is: 12,649.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.33 : 17,867.51 = 9,164.57 : x
  2. Step 2: Convert to fraction form
    12,945.33/17,867.51 = 9,164.57/x
  3. Step 3: Cross multiply
    12,945.33x = 17,867.51 × 9,164.57
  4. Step 4: Simplify right side
    12,945.33x = 163,747,910.96
  5. Step 5: Solve for x
    x = 163,747,910.96/12,945.33
  6. Step 6: Final answer
    x = 12,649.19

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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.