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Finding the Fourth Proportional to 12,219.95, 16,863.45 and 6,914.65

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Solution

The fourth proportional to 12,219.95, 16,863.45 and 6,914.65 is: 9,542.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.95 : 16,863.45 = 6,914.65 : x
  2. Step 2: Convert to fraction form
    12,219.95/16,863.45 = 6,914.65/x
  3. Step 3: Cross multiply
    12,219.95x = 16,863.45 × 6,914.65
  4. Step 4: Simplify right side
    12,219.95x = 116,604,854.54
  5. Step 5: Solve for x
    x = 116,604,854.54/12,219.95
  6. Step 6: Final answer
    x = 9,542.17

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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.