Home / 12,255.36-18,387.20-5,334.40

Finding the Fourth Proportional to 12,255.36, 18,387.20 and 5,334.40

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Solution

The fourth proportional to 12,255.36, 18,387.20 and 5,334.40 is: 8,003.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.36 : 18,387.20 = 5,334.40 : x
  2. Step 2: Convert to fraction form
    12,255.36/18,387.20 = 5,334.40/x
  3. Step 3: Cross multiply
    12,255.36x = 18,387.20 × 5,334.40
  4. Step 4: Simplify right side
    12,255.36x = 98,084,679.68
  5. Step 5: Solve for x
    x = 98,084,679.68/12,255.36
  6. Step 6: Final answer
    x = 8,003.41

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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.