Home / 20,946.28-31,418.60-7,095.28

Finding the Fourth Proportional to 20,946.28, 31,418.60 and 7,095.28

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Solution

The fourth proportional to 20,946.28, 31,418.60 and 7,095.28 is: 10,642.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.28 : 31,418.60 = 7,095.28 : x
  2. Step 2: Convert to fraction form
    20,946.28/31,418.60 = 7,095.28/x
  3. Step 3: Cross multiply
    20,946.28x = 31,418.60 × 7,095.28
  4. Step 4: Simplify right side
    20,946.28x = 222,923,764.21
  5. Step 5: Solve for x
    x = 222,923,764.21/20,946.28
  6. Step 6: Final answer
    x = 10,642.64

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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.