Home / 12,090.48-18,121.12-6,243.92

Finding the Fourth Proportional to 12,090.48, 18,121.12 and 6,243.92

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Solution

The fourth proportional to 12,090.48, 18,121.12 and 6,243.92 is: 9,358.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.48 : 18,121.12 = 6,243.92 : x
  2. Step 2: Convert to fraction form
    12,090.48/18,121.12 = 6,243.92/x
  3. Step 3: Cross multiply
    12,090.48x = 18,121.12 × 6,243.92
  4. Step 4: Simplify right side
    12,090.48x = 113,146,823.59
  5. Step 5: Solve for x
    x = 113,146,823.59/12,090.48
  6. Step 6: Final answer
    x = 9,358.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.