Home / 20,836.27-28,749.22-12,334.11

Finding the Fourth Proportional to 20,836.27, 28,749.22 and 12,334.11

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Solution

The fourth proportional to 20,836.27, 28,749.22 and 12,334.11 is: 17,018.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.27 : 28,749.22 = 12,334.11 : x
  2. Step 2: Convert to fraction form
    20,836.27/28,749.22 = 12,334.11/x
  3. Step 3: Cross multiply
    20,836.27x = 28,749.22 × 12,334.11
  4. Step 4: Simplify right side
    20,836.27x = 354,596,041.89
  5. Step 5: Solve for x
    x = 354,596,041.89/20,836.27
  6. Step 6: Final answer
    x = 17,018.21

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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.