Home / 22,143.90-30,561.36-12,712.26

Finding the Fourth Proportional to 22,143.90, 30,561.36 and 12,712.26

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Solution

The fourth proportional to 22,143.90, 30,561.36 and 12,712.26 is: 17,544.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,143.90 : 30,561.36 = 12,712.26 : x
  2. Step 2: Convert to fraction form
    22,143.90/30,561.36 = 12,712.26/x
  3. Step 3: Cross multiply
    22,143.90x = 30,561.36 × 12,712.26
  4. Step 4: Simplify right side
    22,143.90x = 388,503,954.27
  5. Step 5: Solve for x
    x = 388,503,954.27/22,143.90
  6. Step 6: Final answer
    x = 17,544.51

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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.