Home / 21,275.27-31,903.48-8,118.44

Finding the Fourth Proportional to 21,275.27, 31,903.48 and 8,118.44

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Solution

The fourth proportional to 21,275.27, 31,903.48 and 8,118.44 is: 12,174.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.27 : 31,903.48 = 8,118.44 : x
  2. Step 2: Convert to fraction form
    21,275.27/31,903.48 = 8,118.44/x
  3. Step 3: Cross multiply
    21,275.27x = 31,903.48 × 8,118.44
  4. Step 4: Simplify right side
    21,275.27x = 259,006,458.44
  5. Step 5: Solve for x
    x = 259,006,458.44/21,275.27
  6. Step 6: Final answer
    x = 12,174.06

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1.5x scale

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.