Home / 20,281.94-27,989.17-11,329.82

Finding the Fourth Proportional to 20,281.94, 27,989.17 and 11,329.82

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Solution

The fourth proportional to 20,281.94, 27,989.17 and 11,329.82 is: 15,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.94 : 27,989.17 = 11,329.82 : x
  2. Step 2: Convert to fraction form
    20,281.94/27,989.17 = 11,329.82/x
  3. Step 3: Cross multiply
    20,281.94x = 27,989.17 × 11,329.82
  4. Step 4: Simplify right side
    20,281.94x = 317,112,089.78
  5. Step 5: Solve for x
    x = 317,112,089.78/20,281.94
  6. Step 6: Final answer
    x = 15,635.20

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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.