Home / 20,942.64-31,418.61-6,907.02

Finding the Fourth Proportional to 20,942.64, 31,418.61 and 6,907.02

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Solution

The fourth proportional to 20,942.64, 31,418.61 and 6,907.02 is: 10,362.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.64 : 31,418.61 = 6,907.02 : x
  2. Step 2: Convert to fraction form
    20,942.64/31,418.61 = 6,907.02/x
  3. Step 3: Cross multiply
    20,942.64x = 31,418.61 × 6,907.02
  4. Step 4: Simplify right side
    20,942.64x = 217,008,967.64
  5. Step 5: Solve for x
    x = 217,008,967.64/20,942.64
  6. Step 6: Final answer
    x = 10,362.06

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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.