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Finding the Fourth Proportional to 11,863.80, 16,371 and 6,558.57

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Solution

The fourth proportional to 11,863.80, 16,371 and 6,558.57 is: 9,050.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,863.80 : 16,371 = 6,558.57 : x
  2. Step 2: Convert to fraction form
    11,863.80/16,371 = 6,558.57/x
  3. Step 3: Cross multiply
    11,863.80x = 16,371 × 6,558.57
  4. Step 4: Simplify right side
    11,863.80x = 107,370,349.47
  5. Step 5: Solve for x
    x = 107,370,349.47/11,863.80
  6. Step 6: Final answer
    x = 9,050.25

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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.