Home / 22,049.16-30,428.41-11,978.18

Finding the Fourth Proportional to 22,049.16, 30,428.41 and 11,978.18

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Solution

The fourth proportional to 22,049.16, 30,428.41 and 11,978.18 is: 16,530.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,049.16 : 30,428.41 = 11,978.18 : x
  2. Step 2: Convert to fraction form
    22,049.16/30,428.41 = 11,978.18/x
  3. Step 3: Cross multiply
    22,049.16x = 30,428.41 × 11,978.18
  4. Step 4: Simplify right side
    22,049.16x = 364,476,926.57
  5. Step 5: Solve for x
    x = 364,476,926.57/22,049.16
  6. Step 6: Final answer
    x = 16,530.19

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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.