Home / 20,818.08-31,227.30-8,339.16

Finding the Fourth Proportional to 20,818.08, 31,227.30 and 8,339.16

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Solution

The fourth proportional to 20,818.08, 31,227.30 and 8,339.16 is: 12,508.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.08 : 31,227.30 = 8,339.16 : x
  2. Step 2: Convert to fraction form
    20,818.08/31,227.30 = 8,339.16/x
  3. Step 3: Cross multiply
    20,818.08x = 31,227.30 × 8,339.16
  4. Step 4: Simplify right side
    20,818.08x = 260,409,451.07
  5. Step 5: Solve for x
    x = 260,409,451.07/20,818.08
  6. Step 6: Final answer
    x = 12,508.81

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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.