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Finding the Fourth Proportional to 12,220.50, 16,864.02 and 6,914.46

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Solution

The fourth proportional to 12,220.50, 16,864.02 and 6,914.46 is: 9,541.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.50 : 16,864.02 = 6,914.46 : x
  2. Step 2: Convert to fraction form
    12,220.50/16,864.02 = 6,914.46/x
  3. Step 3: Cross multiply
    12,220.50x = 16,864.02 × 6,914.46
  4. Step 4: Simplify right side
    12,220.50x = 116,605,591.73
  5. Step 5: Solve for x
    x = 116,605,591.73/12,220.50
  6. Step 6: Final answer
    x = 9,541.80

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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.