Home / 21,314.90-31,972.35-6,523.85

Finding the Fourth Proportional to 21,314.90, 31,972.35 and 6,523.85

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Solution

The fourth proportional to 21,314.90, 31,972.35 and 6,523.85 is: 9,785.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.90 : 31,972.35 = 6,523.85 : x
  2. Step 2: Convert to fraction form
    21,314.90/31,972.35 = 6,523.85/x
  3. Step 3: Cross multiply
    21,314.90x = 31,972.35 × 6,523.85
  4. Step 4: Simplify right side
    21,314.90x = 208,582,815.55
  5. Step 5: Solve for x
    x = 208,582,815.55/21,314.90
  6. Step 6: Final answer
    x = 9,785.78

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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.