Home / 20,282.94-27,990.55-11,330.82

Finding the Fourth Proportional to 20,282.94, 27,990.55 and 11,330.82

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Solution

The fourth proportional to 20,282.94, 27,990.55 and 11,330.82 is: 15,636.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.94 : 27,990.55 = 11,330.82 : x
  2. Step 2: Convert to fraction form
    20,282.94/27,990.55 = 11,330.82/x
  3. Step 3: Cross multiply
    20,282.94x = 27,990.55 × 11,330.82
  4. Step 4: Simplify right side
    20,282.94x = 317,155,883.75
  5. Step 5: Solve for x
    x = 317,155,883.75/20,282.94
  6. Step 6: Final answer
    x = 15,636.58

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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.