Home / 20,228.87-27,916.80-11,276.44

Finding the Fourth Proportional to 20,228.87, 27,916.80 and 11,276.44

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Solution

The fourth proportional to 20,228.87, 27,916.80 and 11,276.44 is: 15,562.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.87 : 27,916.80 = 11,276.44 : x
  2. Step 2: Convert to fraction form
    20,228.87/27,916.80 = 11,276.44/x
  3. Step 3: Cross multiply
    20,228.87x = 27,916.80 × 11,276.44
  4. Step 4: Simplify right side
    20,228.87x = 314,802,120.19
  5. Step 5: Solve for x
    x = 314,802,120.19/20,228.87
  6. Step 6: Final answer
    x = 15,562.02

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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.