Home / 12,511.20-17,268.48-7,209.12

Finding the Fourth Proportional to 12,511.20, 17,268.48 and 7,209.12

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Solution

The fourth proportional to 12,511.20, 17,268.48 and 7,209.12 is: 9,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.20 : 17,268.48 = 7,209.12 : x
  2. Step 2: Convert to fraction form
    12,511.20/17,268.48 = 7,209.12/x
  3. Step 3: Cross multiply
    12,511.20x = 17,268.48 × 7,209.12
  4. Step 4: Simplify right side
    12,511.20x = 124,490,544.54
  5. Step 5: Solve for x
    x = 124,490,544.54/12,511.20
  6. Step 6: Final answer
    x = 9,950.33

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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.