Home / 12,645.86-17,451.25-6,980.65

Finding the Fourth Proportional to 12,645.86, 17,451.25 and 6,980.65

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Solution

The fourth proportional to 12,645.86, 17,451.25 and 6,980.65 is: 9,633.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.86 : 17,451.25 = 6,980.65 : x
  2. Step 2: Convert to fraction form
    12,645.86/17,451.25 = 6,980.65/x
  3. Step 3: Cross multiply
    12,645.86x = 17,451.25 × 6,980.65
  4. Step 4: Simplify right side
    12,645.86x = 121,821,007.23
  5. Step 5: Solve for x
    x = 121,821,007.23/12,645.86
  6. Step 6: Final answer
    x = 9,633.28

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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.