Home / 21,099.04-31,629.94-7,960.64

Finding the Fourth Proportional to 21,099.04, 31,629.94 and 7,960.64

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Solution

The fourth proportional to 21,099.04, 31,629.94 and 7,960.64 is: 11,933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.04 : 31,629.94 = 7,960.64 : x
  2. Step 2: Convert to fraction form
    21,099.04/31,629.94 = 7,960.64/x
  3. Step 3: Cross multiply
    21,099.04x = 31,629.94 × 7,960.64
  4. Step 4: Simplify right side
    21,099.04x = 251,794,565.56
  5. Step 5: Solve for x
    x = 251,794,565.56/21,099.04
  6. Step 6: Final answer
    x = 11,933.93

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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.