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Finding the Fourth Proportional to 22,178.40, 30,604.95 and 12,616.98

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Solution

The fourth proportional to 22,178.40, 30,604.95 and 12,616.98 is: 17,410.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,178.40 : 30,604.95 = 12,616.98 : x
  2. Step 2: Convert to fraction form
    22,178.40/30,604.95 = 12,616.98/x
  3. Step 3: Cross multiply
    22,178.40x = 30,604.95 × 12,616.98
  4. Step 4: Simplify right side
    22,178.40x = 386,142,042.05
  5. Step 5: Solve for x
    x = 386,142,042.05/22,178.40
  6. Step 6: Final answer
    x = 17,410.73

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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.