Home / 12,388.24-17,090.20-7,352.68

Finding the Fourth Proportional to 12,388.24, 17,090.20 and 7,352.68

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Solution

The fourth proportional to 12,388.24, 17,090.20 and 7,352.68 is: 10,143.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.24 : 17,090.20 = 7,352.68 : x
  2. Step 2: Convert to fraction form
    12,388.24/17,090.20 = 7,352.68/x
  3. Step 3: Cross multiply
    12,388.24x = 17,090.20 × 7,352.68
  4. Step 4: Simplify right side
    12,388.24x = 125,658,734.97
  5. Step 5: Solve for x
    x = 125,658,734.97/12,388.24
  6. Step 6: Final answer
    x = 10,143.39

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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.