Home / 12,717.05-19,068.08-5,218.38

Finding the Fourth Proportional to 12,717.05, 19,068.08 and 5,218.38

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Solution

The fourth proportional to 12,717.05, 19,068.08 and 5,218.38 is: 7,824.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,717.05 : 19,068.08 = 5,218.38 : x
  2. Step 2: Convert to fraction form
    12,717.05/19,068.08 = 5,218.38/x
  3. Step 3: Cross multiply
    12,717.05x = 19,068.08 × 5,218.38
  4. Step 4: Simplify right side
    12,717.05x = 99,504,391.97
  5. Step 5: Solve for x
    x = 99,504,391.97/12,717.05
  6. Step 6: Final answer
    x = 7,824.49

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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.