Home / 17,220.78-23,719.41-13,234.26

Finding the Fourth Proportional to 17,220.78, 23,719.41 and 13,234.26

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Solution

The fourth proportional to 17,220.78, 23,719.41 and 13,234.26 is: 18,228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,220.78 : 23,719.41 = 13,234.26 : x
  2. Step 2: Convert to fraction form
    17,220.78/23,719.41 = 13,234.26/x
  3. Step 3: Cross multiply
    17,220.78x = 23,719.41 × 13,234.26
  4. Step 4: Simplify right side
    17,220.78x = 313,908,838.99
  5. Step 5: Solve for x
    x = 313,908,838.99/17,220.78
  6. Step 6: Final answer
    x = 18,228.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.