Home / 22,112.10-30,512.30-13,157.82

Finding the Fourth Proportional to 22,112.10, 30,512.30 and 13,157.82

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Solution

The fourth proportional to 22,112.10, 30,512.30 and 13,157.82 is: 18,156.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,112.10 : 30,512.30 = 13,157.82 : x
  2. Step 2: Convert to fraction form
    22,112.10/30,512.30 = 13,157.82/x
  3. Step 3: Cross multiply
    22,112.10x = 30,512.30 × 13,157.82
  4. Step 4: Simplify right side
    22,112.10x = 401,475,351.19
  5. Step 5: Solve for x
    x = 401,475,351.19/22,112.10
  6. Step 6: Final answer
    x = 18,156.36

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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.