Home / 20,153.87-27,813.28-11,201.52

Finding the Fourth Proportional to 20,153.87, 27,813.28 and 11,201.52

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Solution

The fourth proportional to 20,153.87, 27,813.28 and 11,201.52 is: 15,458.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.87 : 27,813.28 = 11,201.52 : x
  2. Step 2: Convert to fraction form
    20,153.87/27,813.28 = 11,201.52/x
  3. Step 3: Cross multiply
    20,153.87x = 27,813.28 × 11,201.52
  4. Step 4: Simplify right side
    20,153.87x = 311,550,817.11
  5. Step 5: Solve for x
    x = 311,550,817.11/20,153.87
  6. Step 6: Final answer
    x = 15,458.61

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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.