Home / 12,479.67-17,220.60-7,175.25

Finding the Fourth Proportional to 12,479.67, 17,220.60 and 7,175.25

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Solution

The fourth proportional to 12,479.67, 17,220.60 and 7,175.25 is: 9,901.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.67 : 17,220.60 = 7,175.25 : x
  2. Step 2: Convert to fraction form
    12,479.67/17,220.60 = 7,175.25/x
  3. Step 3: Cross multiply
    12,479.67x = 17,220.60 × 7,175.25
  4. Step 4: Simplify right side
    12,479.67x = 123,562,110.15
  5. Step 5: Solve for x
    x = 123,562,110.15/12,479.67
  6. Step 6: Final answer
    x = 9,901.07

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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.