Home / 22,201.21-30,637.28-12,129.39

Finding the Fourth Proportional to 22,201.21, 30,637.28 and 12,129.39

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Solution

The fourth proportional to 22,201.21, 30,637.28 and 12,129.39 is: 16,738.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,201.21 : 30,637.28 = 12,129.39 : x
  2. Step 2: Convert to fraction form
    22,201.21/30,637.28 = 12,129.39/x
  3. Step 3: Cross multiply
    22,201.21x = 30,637.28 × 12,129.39
  4. Step 4: Simplify right side
    22,201.21x = 371,611,563.93
  5. Step 5: Solve for x
    x = 371,611,563.93/22,201.21
  6. Step 6: Final answer
    x = 16,738.35

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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.