Home / 12,939.39-17,853.30-9,396.45

Finding the Fourth Proportional to 12,939.39, 17,853.30 and 9,396.45

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Solution

The fourth proportional to 12,939.39, 17,853.30 and 9,396.45 is: 12,964.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.39 : 17,853.30 = 9,396.45 : x
  2. Step 2: Convert to fraction form
    12,939.39/17,853.30 = 9,396.45/x
  3. Step 3: Cross multiply
    12,939.39x = 17,853.30 × 9,396.45
  4. Step 4: Simplify right side
    12,939.39x = 167,757,640.79
  5. Step 5: Solve for x
    x = 167,757,640.79/12,939.39
  6. Step 6: Final answer
    x = 12,964.88

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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.