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Finding the Fourth Proportional to 11,699.70, 16,145.82 and 6,394.74

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Solution

The fourth proportional to 11,699.70, 16,145.82 and 6,394.74 is: 8,824.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,699.70 : 16,145.82 = 6,394.74 : x
  2. Step 2: Convert to fraction form
    11,699.70/16,145.82 = 6,394.74/x
  3. Step 3: Cross multiply
    11,699.70x = 16,145.82 × 6,394.74
  4. Step 4: Simplify right side
    11,699.70x = 103,248,320.99
  5. Step 5: Solve for x
    x = 103,248,320.99/11,699.70
  6. Step 6: Final answer
    x = 8,824.87

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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.