Home / 21,311.64-31,984.58-9,625.88

Finding the Fourth Proportional to 21,311.64, 31,984.58 and 9,625.88

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Solution

The fourth proportional to 21,311.64, 31,984.58 and 9,625.88 is: 14,446.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.64 : 31,984.58 = 9,625.88 : x
  2. Step 2: Convert to fraction form
    21,311.64/31,984.58 = 9,625.88/x
  3. Step 3: Cross multiply
    21,311.64x = 31,984.58 × 9,625.88
  4. Step 4: Simplify right side
    21,311.64x = 307,879,728.93
  5. Step 5: Solve for x
    x = 307,879,728.93/21,311.64
  6. Step 6: Final answer
    x = 14,446.55

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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.