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Finding the Fourth Proportional to 9,953.30, 13,720.83 and 6,367.87

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Solution

The fourth proportional to 9,953.30, 13,720.83 and 6,367.87 is: 8,778.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,953.30 : 13,720.83 = 6,367.87 : x
  2. Step 2: Convert to fraction form
    9,953.30/13,720.83 = 6,367.87/x
  3. Step 3: Cross multiply
    9,953.30x = 13,720.83 × 6,367.87
  4. Step 4: Simplify right side
    9,953.30x = 87,372,511.66
  5. Step 5: Solve for x
    x = 87,372,511.66/9,953.30
  6. Step 6: Final answer
    x = 8,778.25

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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.