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Finding the Fourth Proportional to 9,999.92, 15,004.20 and 5,610.80

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Solution

The fourth proportional to 9,999.92, 15,004.20 and 5,610.80 is: 8,418.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.92 : 15,004.20 = 5,610.80 : x
  2. Step 2: Convert to fraction form
    9,999.92/15,004.20 = 5,610.80/x
  3. Step 3: Cross multiply
    9,999.92x = 15,004.20 × 5,610.80
  4. Step 4: Simplify right side
    9,999.92x = 84,185,565.36
  5. Step 5: Solve for x
    x = 84,185,565.36/9,999.92
  6. Step 6: Final answer
    x = 8,418.62

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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.