Home / 20,601.43-28,428.78-11,650.81

Finding the Fourth Proportional to 20,601.43, 28,428.78 and 11,650.81

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Solution

The fourth proportional to 20,601.43, 28,428.78 and 11,650.81 is: 16,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.43 : 28,428.78 = 11,650.81 : x
  2. Step 2: Convert to fraction form
    20,601.43/28,428.78 = 11,650.81/x
  3. Step 3: Cross multiply
    20,601.43x = 28,428.78 × 11,650.81
  4. Step 4: Simplify right side
    20,601.43x = 331,218,314.31
  5. Step 5: Solve for x
    x = 331,218,314.31/20,601.43
  6. Step 6: Final answer
    x = 16,077.44

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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.