Home / 21,234.08-31,863.92-7,392.80

Finding the Fourth Proportional to 21,234.08, 31,863.92 and 7,392.80

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Solution

The fourth proportional to 21,234.08, 31,863.92 and 7,392.80 is: 11,093.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.08 : 31,863.92 = 7,392.80 : x
  2. Step 2: Convert to fraction form
    21,234.08/31,863.92 = 7,392.80/x
  3. Step 3: Cross multiply
    21,234.08x = 31,863.92 × 7,392.80
  4. Step 4: Simplify right side
    21,234.08x = 235,563,587.78
  5. Step 5: Solve for x
    x = 235,563,587.78/21,234.08
  6. Step 6: Final answer
    x = 11,093.66

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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.