Home / 12,718.80-19,074.79-5,321.73

Finding the Fourth Proportional to 12,718.80, 19,074.79 and 5,321.73

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Solution

The fourth proportional to 12,718.80, 19,074.79 and 5,321.73 is: 7,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.80 : 19,074.79 = 5,321.73 : x
  2. Step 2: Convert to fraction form
    12,718.80/19,074.79 = 5,321.73/x
  3. Step 3: Cross multiply
    12,718.80x = 19,074.79 × 5,321.73
  4. Step 4: Simplify right side
    12,718.80x = 101,510,882.19
  5. Step 5: Solve for x
    x = 101,510,882.19/12,718.80
  6. Step 6: Final answer
    x = 7,981.17

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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.