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Finding the Fourth Proportional to 11,879.71, 17,807.82 and 5,628.74

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Solution

The fourth proportional to 11,879.71, 17,807.82 and 5,628.74 is: 8,437.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.71 : 17,807.82 = 5,628.74 : x
  2. Step 2: Convert to fraction form
    11,879.71/17,807.82 = 5,628.74/x
  3. Step 3: Cross multiply
    11,879.71x = 17,807.82 × 5,628.74
  4. Step 4: Simplify right side
    11,879.71x = 100,235,588.75
  5. Step 5: Solve for x
    x = 100,235,588.75/11,879.71
  6. Step 6: Final answer
    x = 8,437.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.