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Finding the Fourth Proportional to 20,563.74, 28,377.74 and 11,610.71

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Solution

The fourth proportional to 20,563.74, 28,377.74 and 11,610.71 is: 16,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.74 : 28,377.74 = 11,610.71 : x
  2. Step 2: Convert to fraction form
    20,563.74/28,377.74 = 11,610.71/x
  3. Step 3: Cross multiply
    20,563.74x = 28,377.74 × 11,610.71
  4. Step 4: Simplify right side
    20,563.74x = 329,485,703.15
  5. Step 5: Solve for x
    x = 329,485,703.15/20,563.74
  6. Step 6: Final answer
    x = 16,022.65

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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.