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Finding the Fourth Proportional to 9,999.75, 15,008.67 and 5,323.68

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Solution

The fourth proportional to 9,999.75, 15,008.67 and 5,323.68 is: 7,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.75 : 15,008.67 = 5,323.68 : x
  2. Step 2: Convert to fraction form
    9,999.75/15,008.67 = 5,323.68/x
  3. Step 3: Cross multiply
    9,999.75x = 15,008.67 × 5,323.68
  4. Step 4: Simplify right side
    9,999.75x = 79,901,356.31
  5. Step 5: Solve for x
    x = 79,901,356.31/9,999.75
  6. Step 6: Final answer
    x = 7,990.34

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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.