Home / 21,218.70-31,837.26-8,074.83

Finding the Fourth Proportional to 21,218.70, 31,837.26 and 8,074.83

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Solution

The fourth proportional to 21,218.70, 31,837.26 and 8,074.83 is: 12,115.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.70 : 31,837.26 = 8,074.83 : x
  2. Step 2: Convert to fraction form
    21,218.70/31,837.26 = 8,074.83/x
  3. Step 3: Cross multiply
    21,218.70x = 31,837.26 × 8,074.83
  4. Step 4: Simplify right side
    21,218.70x = 257,080,302.98
  5. Step 5: Solve for x
    x = 257,080,302.98/21,218.70
  6. Step 6: Final answer
    x = 12,115.75

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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.