Home / 18,660.28-27,990.30-5,511.52

Finding the Fourth Proportional to 18,660.28, 27,990.30 and 5,511.52

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Solution

The fourth proportional to 18,660.28, 27,990.30 and 5,511.52 is: 8,267.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.28 : 27,990.30 = 5,511.52 : x
  2. Step 2: Convert to fraction form
    18,660.28/27,990.30 = 5,511.52/x
  3. Step 3: Cross multiply
    18,660.28x = 27,990.30 × 5,511.52
  4. Step 4: Simplify right side
    18,660.28x = 154,269,098.26
  5. Step 5: Solve for x
    x = 154,269,098.26/18,660.28
  6. Step 6: Final answer
    x = 8,267.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.