Home / 12,578.22-17,358.30-7,543.26

Finding the Fourth Proportional to 12,578.22, 17,358.30 and 7,543.26

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Solution

The fourth proportional to 12,578.22, 17,358.30 and 7,543.26 is: 10,409.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.22 : 17,358.30 = 7,543.26 : x
  2. Step 2: Convert to fraction form
    12,578.22/17,358.30 = 7,543.26/x
  3. Step 3: Cross multiply
    12,578.22x = 17,358.30 × 7,543.26
  4. Step 4: Simplify right side
    12,578.22x = 130,938,170.06
  5. Step 5: Solve for x
    x = 130,938,170.06/12,578.22
  6. Step 6: Final answer
    x = 10,409.91

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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.