Home / 22,447.76-30,979.26-12,378.44

Finding the Fourth Proportional to 22,447.76, 30,979.26 and 12,378.44

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Solution

The fourth proportional to 22,447.76, 30,979.26 and 12,378.44 is: 17,082.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,447.76 : 30,979.26 = 12,378.44 : x
  2. Step 2: Convert to fraction form
    22,447.76/30,979.26 = 12,378.44/x
  3. Step 3: Cross multiply
    22,447.76x = 30,979.26 × 12,378.44
  4. Step 4: Simplify right side
    22,447.76x = 383,474,911.15
  5. Step 5: Solve for x
    x = 383,474,911.15/22,447.76
  6. Step 6: Final answer
    x = 17,082.99

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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.