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Finding the Fourth Proportional to 12,633.40, 18,950.10 and 8,696.80

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Solution

The fourth proportional to 12,633.40, 18,950.10 and 8,696.80 is: 13,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,633.40 : 18,950.10 = 8,696.80 : x
  2. Step 2: Convert to fraction form
    12,633.40/18,950.10 = 8,696.80/x
  3. Step 3: Cross multiply
    12,633.40x = 18,950.10 × 8,696.80
  4. Step 4: Simplify right side
    12,633.40x = 164,805,229.68
  5. Step 5: Solve for x
    x = 164,805,229.68/12,633.40
  6. Step 6: Final answer
    x = 13,045.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.