Home / 12,888.24-19,318.96-7,329.60

Finding the Fourth Proportional to 12,888.24, 19,318.96 and 7,329.60

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Solution

The fourth proportional to 12,888.24, 19,318.96 and 7,329.60 is: 10,986.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.24 : 19,318.96 = 7,329.60 : x
  2. Step 2: Convert to fraction form
    12,888.24/19,318.96 = 7,329.60/x
  3. Step 3: Cross multiply
    12,888.24x = 19,318.96 × 7,329.60
  4. Step 4: Simplify right side
    12,888.24x = 141,600,249.22
  5. Step 5: Solve for x
    x = 141,600,249.22/12,888.24
  6. Step 6: Final answer
    x = 10,986.78

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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.