Home / 12,645.23-17,450.31-6,979.98

Finding the Fourth Proportional to 12,645.23, 17,450.31 and 6,979.98

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Solution

The fourth proportional to 12,645.23, 17,450.31 and 6,979.98 is: 9,632.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.23 : 17,450.31 = 6,979.98 : x
  2. Step 2: Convert to fraction form
    12,645.23/17,450.31 = 6,979.98/x
  3. Step 3: Cross multiply
    12,645.23x = 17,450.31 × 6,979.98
  4. Step 4: Simplify right side
    12,645.23x = 121,802,767.76
  5. Step 5: Solve for x
    x = 121,802,767.76/12,645.23
  6. Step 6: Final answer
    x = 9,632.31

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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.