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Finding the Fourth Proportional to 12,651, 18,952.74 and 11,696.28

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Solution

The fourth proportional to 12,651, 18,952.74 and 11,696.28 is: 17,522.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651 : 18,952.74 = 11,696.28 : x
  2. Step 2: Convert to fraction form
    12,651/18,952.74 = 11,696.28/x
  3. Step 3: Cross multiply
    12,651x = 18,952.74 × 11,696.28
  4. Step 4: Simplify right side
    12,651x = 221,676,553.81
  5. Step 5: Solve for x
    x = 221,676,553.81/12,651
  6. Step 6: Final answer
    x = 17,522.45

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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.