Home / 12,379.12-17,076.28-7,338.48

Finding the Fourth Proportional to 12,379.12, 17,076.28 and 7,338.48

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Solution

The fourth proportional to 12,379.12, 17,076.28 and 7,338.48 is: 10,123.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.12 : 17,076.28 = 7,338.48 : x
  2. Step 2: Convert to fraction form
    12,379.12/17,076.28 = 7,338.48/x
  3. Step 3: Cross multiply
    12,379.12x = 17,076.28 × 7,338.48
  4. Step 4: Simplify right side
    12,379.12x = 125,313,939.25
  5. Step 5: Solve for x
    x = 125,313,939.25/12,379.12
  6. Step 6: Final answer
    x = 10,123.01

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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.