Home / 17,124.05-25,688.49-5,278.78

Finding the Fourth Proportional to 17,124.05, 25,688.49 and 5,278.78

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Solution

The fourth proportional to 17,124.05, 25,688.49 and 5,278.78 is: 7,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,124.05 : 25,688.49 = 5,278.78 : x
  2. Step 2: Convert to fraction form
    17,124.05/25,688.49 = 5,278.78/x
  3. Step 3: Cross multiply
    17,124.05x = 25,688.49 × 5,278.78
  4. Step 4: Simplify right side
    17,124.05x = 135,603,887.24
  5. Step 5: Solve for x
    x = 135,603,887.24/17,124.05
  6. Step 6: Final answer
    x = 7,918.91

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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.