Home / 18,121.28-27,124.32-9,789.44

Finding the Fourth Proportional to 18,121.28, 27,124.32 and 9,789.44

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Solution

The fourth proportional to 18,121.28, 27,124.32 and 9,789.44 is: 14,653.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.28 : 27,124.32 = 9,789.44 : x
  2. Step 2: Convert to fraction form
    18,121.28/27,124.32 = 9,789.44/x
  3. Step 3: Cross multiply
    18,121.28x = 27,124.32 × 9,789.44
  4. Step 4: Simplify right side
    18,121.28x = 265,531,903.18
  5. Step 5: Solve for x
    x = 265,531,903.18/18,121.28
  6. Step 6: Final answer
    x = 14,653.04

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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.