Home / 22,201.39-30,637.56-12,129.61

Finding the Fourth Proportional to 22,201.39, 30,637.56 and 12,129.61

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Solution

The fourth proportional to 22,201.39, 30,637.56 and 12,129.61 is: 16,738.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,201.39 : 30,637.56 = 12,129.61 : x
  2. Step 2: Convert to fraction form
    22,201.39/30,637.56 = 12,129.61/x
  3. Step 3: Cross multiply
    22,201.39x = 30,637.56 × 12,129.61
  4. Step 4: Simplify right side
    22,201.39x = 371,621,629.76
  5. Step 5: Solve for x
    x = 371,621,629.76/22,201.39
  6. Step 6: Final answer
    x = 16,738.67

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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.