Home / 20,282.12-27,989.19-11,329.59

Finding the Fourth Proportional to 20,282.12, 27,989.19 and 11,329.59

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Solution

The fourth proportional to 20,282.12, 27,989.19 and 11,329.59 is: 15,634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.12 : 27,989.19 = 11,329.59 : x
  2. Step 2: Convert to fraction form
    20,282.12/27,989.19 = 11,329.59/x
  3. Step 3: Cross multiply
    20,282.12x = 27,989.19 × 11,329.59
  4. Step 4: Simplify right side
    20,282.12x = 317,106,047.13
  5. Step 5: Solve for x
    x = 317,106,047.13/20,282.12
  6. Step 6: Final answer
    x = 15,634.76

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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.