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Finding the Fourth Proportional to 22,300.79, 30,775.19 and 12,230.11

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Solution

The fourth proportional to 22,300.79, 30,775.19 and 12,230.11 is: 16,877.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,300.79 : 30,775.19 = 12,230.11 : x
  2. Step 2: Convert to fraction form
    22,300.79/30,775.19 = 12,230.11/x
  3. Step 3: Cross multiply
    22,300.79x = 30,775.19 × 12,230.11
  4. Step 4: Simplify right side
    22,300.79x = 376,384,091.64
  5. Step 5: Solve for x
    x = 376,384,091.64/22,300.79
  6. Step 6: Final answer
    x = 16,877.61

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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.