Home / 13,160.78-19,744.41-9,272.78

Finding the Fourth Proportional to 13,160.78, 19,744.41 and 9,272.78

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Solution

The fourth proportional to 13,160.78, 19,744.41 and 9,272.78 is: 13,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.78 : 19,744.41 = 9,272.78 : x
  2. Step 2: Convert to fraction form
    13,160.78/19,744.41 = 9,272.78/x
  3. Step 3: Cross multiply
    13,160.78x = 19,744.41 × 9,272.78
  4. Step 4: Simplify right side
    13,160.78x = 183,085,471.44
  5. Step 5: Solve for x
    x = 183,085,471.44/13,160.78
  6. Step 6: Final answer
    x = 13,911.45

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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.