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Finding the Fourth Proportional to 9,999, 14,994.09 and 5,317.86

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Solution

The fourth proportional to 9,999, 14,994.09 and 5,317.86 is: 7,974.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999 : 14,994.09 = 5,317.86 : x
  2. Step 2: Convert to fraction form
    9,999/14,994.09 = 5,317.86/x
  3. Step 3: Cross multiply
    9,999x = 14,994.09 × 5,317.86
  4. Step 4: Simplify right side
    9,999x = 79,736,471.45
  5. Step 5: Solve for x
    x = 79,736,471.45/9,999
  6. Step 6: Final answer
    x = 7,974.44

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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.