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Finding the Fourth Proportional to 22,229.99, 30,678.24 and 12,671.39

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Solution

The fourth proportional to 22,229.99, 30,678.24 and 12,671.39 is: 17,487.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,229.99 : 30,678.24 = 12,671.39 : x
  2. Step 2: Convert to fraction form
    22,229.99/30,678.24 = 12,671.39/x
  3. Step 3: Cross multiply
    22,229.99x = 30,678.24 × 12,671.39
  4. Step 4: Simplify right side
    22,229.99x = 388,735,895.20
  5. Step 5: Solve for x
    x = 388,735,895.20/22,229.99
  6. Step 6: Final answer
    x = 17,487.00

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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.