Home / 12,289.25-18,391.52-7,542.26

Finding the Fourth Proportional to 12,289.25, 18,391.52 and 7,542.26

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Solution

The fourth proportional to 12,289.25, 18,391.52 and 7,542.26 is: 11,287.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.25 : 18,391.52 = 7,542.26 : x
  2. Step 2: Convert to fraction form
    12,289.25/18,391.52 = 7,542.26/x
  3. Step 3: Cross multiply
    12,289.25x = 18,391.52 × 7,542.26
  4. Step 4: Simplify right side
    12,289.25x = 138,713,560.80
  5. Step 5: Solve for x
    x = 138,713,560.80/12,289.25
  6. Step 6: Final answer
    x = 11,287.39

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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.