Home / 19,992.75-29,989.16-5,201.64

Finding the Fourth Proportional to 19,992.75, 29,989.16 and 5,201.64

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Solution

The fourth proportional to 19,992.75, 29,989.16 and 5,201.64 is: 7,802.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.75 : 29,989.16 = 5,201.64 : x
  2. Step 2: Convert to fraction form
    19,992.75/29,989.16 = 5,201.64/x
  3. Step 3: Cross multiply
    19,992.75x = 29,989.16 × 5,201.64
  4. Step 4: Simplify right side
    19,992.75x = 155,992,807.72
  5. Step 5: Solve for x
    x = 155,992,807.72/19,992.75
  6. Step 6: Final answer
    x = 7,802.47

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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.