Home / 12,388.68-17,090.80-7,353.11

Finding the Fourth Proportional to 12,388.68, 17,090.80 and 7,353.11

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Solution

The fourth proportional to 12,388.68, 17,090.80 and 7,353.11 is: 10,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.68 : 17,090.80 = 7,353.11 : x
  2. Step 2: Convert to fraction form
    12,388.68/17,090.80 = 7,353.11/x
  3. Step 3: Cross multiply
    12,388.68x = 17,090.80 × 7,353.11
  4. Step 4: Simplify right side
    12,388.68x = 125,670,556.73
  5. Step 5: Solve for x
    x = 125,670,556.73/12,388.68
  6. Step 6: Final answer
    x = 10,143.98

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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.