Home / 12,645.15-17,450.00-6,979.91

Finding the Fourth Proportional to 12,645.15, 17,450.00 and 6,979.91

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Solution

The fourth proportional to 12,645.15, 17,450.00 and 6,979.91 is: 9,632.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.15 : 17,450.00 = 6,979.91 : x
  2. Step 2: Convert to fraction form
    12,645.15/17,450.00 = 6,979.91/x
  3. Step 3: Cross multiply
    12,645.15x = 17,450.00 × 6,979.91
  4. Step 4: Simplify right side
    12,645.15x = 121,799,421.87
  5. Step 5: Solve for x
    x = 121,799,421.87/12,645.15
  6. Step 6: Final answer
    x = 9,632.11

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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.