Home / 13,239.12-19,862.84-5,451.60

Finding the Fourth Proportional to 13,239.12, 19,862.84 and 5,451.60

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Solution

The fourth proportional to 13,239.12, 19,862.84 and 5,451.60 is: 8,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.12 : 19,862.84 = 5,451.60 : x
  2. Step 2: Convert to fraction form
    13,239.12/19,862.84 = 5,451.60/x
  3. Step 3: Cross multiply
    13,239.12x = 19,862.84 × 5,451.60
  4. Step 4: Simplify right side
    13,239.12x = 108,284,258.54
  5. Step 5: Solve for x
    x = 108,284,258.54/13,239.12
  6. Step 6: Final answer
    x = 8,179.11

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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.