Home / 12,669.28-17,482.44-7,945.36

Finding the Fourth Proportional to 12,669.28, 17,482.44 and 7,945.36

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Solution

The fourth proportional to 12,669.28, 17,482.44 and 7,945.36 is: 10,963.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.28 : 17,482.44 = 7,945.36 : x
  2. Step 2: Convert to fraction form
    12,669.28/17,482.44 = 7,945.36/x
  3. Step 3: Cross multiply
    12,669.28x = 17,482.44 × 7,945.36
  4. Step 4: Simplify right side
    12,669.28x = 138,904,279.48
  5. Step 5: Solve for x
    x = 138,904,279.48/12,669.28
  6. Step 6: Final answer
    x = 10,963.87

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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.