Home / 21,276.27-31,904.98-8,119.44

Finding the Fourth Proportional to 21,276.27, 31,904.98 and 8,119.44

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Solution

The fourth proportional to 21,276.27, 31,904.98 and 8,119.44 is: 12,175.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.27 : 31,904.98 = 8,119.44 : x
  2. Step 2: Convert to fraction form
    21,276.27/31,904.98 = 8,119.44/x
  3. Step 3: Cross multiply
    21,276.27x = 31,904.98 × 8,119.44
  4. Step 4: Simplify right side
    21,276.27x = 259,050,570.81
  5. Step 5: Solve for x
    x = 259,050,570.81/21,276.27
  6. Step 6: Final answer
    x = 12,175.56

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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.