Home / 21,900.06-30,222.11-12,468.62

Finding the Fourth Proportional to 21,900.06, 30,222.11 and 12,468.62

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Solution

The fourth proportional to 21,900.06, 30,222.11 and 12,468.62 is: 17,206.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,900.06 : 30,222.11 = 12,468.62 : x
  2. Step 2: Convert to fraction form
    21,900.06/30,222.11 = 12,468.62/x
  3. Step 3: Cross multiply
    21,900.06x = 30,222.11 × 12,468.62
  4. Step 4: Simplify right side
    21,900.06x = 376,827,791.73
  5. Step 5: Solve for x
    x = 376,827,791.73/21,900.06
  6. Step 6: Final answer
    x = 17,206.71

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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.