Home / 18,552.17-27,782.09-12,979.42

Finding the Fourth Proportional to 18,552.17, 27,782.09 and 12,979.42

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Solution

The fourth proportional to 18,552.17, 27,782.09 and 12,979.42 is: 19,436.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,552.17 : 27,782.09 = 12,979.42 : x
  2. Step 2: Convert to fraction form
    18,552.17/27,782.09 = 12,979.42/x
  3. Step 3: Cross multiply
    18,552.17x = 27,782.09 × 12,979.42
  4. Step 4: Simplify right side
    18,552.17x = 360,595,280.24
  5. Step 5: Solve for x
    x = 360,595,280.24/18,552.17
  6. Step 6: Final answer
    x = 19,436.83

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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.