Home / 20,818.08-31,227.04-8,343.68

Finding the Fourth Proportional to 20,818.08, 31,227.04 and 8,343.68

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Solution

The fourth proportional to 20,818.08, 31,227.04 and 8,343.68 is: 12,515.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.08 : 31,227.04 = 8,343.68 : x
  2. Step 2: Convert to fraction form
    20,818.08/31,227.04 = 8,343.68/x
  3. Step 3: Cross multiply
    20,818.08x = 31,227.04 × 8,343.68
  4. Step 4: Simplify right side
    20,818.08x = 260,548,429.11
  5. Step 5: Solve for x
    x = 260,548,429.11/20,818.08
  6. Step 6: Final answer
    x = 12,515.49

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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.