Home / 21,310.38-31,976.55-9,472.32

Finding the Fourth Proportional to 21,310.38, 31,976.55 and 9,472.32

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Solution

The fourth proportional to 21,310.38, 31,976.55 and 9,472.32 is: 14,213.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.38 : 31,976.55 = 9,472.32 : x
  2. Step 2: Convert to fraction form
    21,310.38/31,976.55 = 9,472.32/x
  3. Step 3: Cross multiply
    21,310.38x = 31,976.55 × 9,472.32
  4. Step 4: Simplify right side
    21,310.38x = 302,892,114.10
  5. Step 5: Solve for x
    x = 302,892,114.10/21,310.38
  6. Step 6: Final answer
    x = 14,213.36

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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.