Home / 12,888.62-19,329.91-7,268.71

Finding the Fourth Proportional to 12,888.62, 19,329.91 and 7,268.71

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Solution

The fourth proportional to 12,888.62, 19,329.91 and 7,268.71 is: 10,901.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.62 : 19,329.91 = 7,268.71 : x
  2. Step 2: Convert to fraction form
    12,888.62/19,329.91 = 7,268.71/x
  3. Step 3: Cross multiply
    12,888.62x = 19,329.91 × 7,268.71
  4. Step 4: Simplify right side
    12,888.62x = 140,503,510.12
  5. Step 5: Solve for x
    x = 140,503,510.12/12,888.62
  6. Step 6: Final answer
    x = 10,901.36

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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.