Home / 20,148.71-30,215.22-6,818.13

Finding the Fourth Proportional to 20,148.71, 30,215.22 and 6,818.13

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Solution

The fourth proportional to 20,148.71, 30,215.22 and 6,818.13 is: 10,224.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.71 : 30,215.22 = 6,818.13 : x
  2. Step 2: Convert to fraction form
    20,148.71/30,215.22 = 6,818.13/x
  3. Step 3: Cross multiply
    20,148.71x = 30,215.22 × 6,818.13
  4. Step 4: Simplify right side
    20,148.71x = 206,011,297.94
  5. Step 5: Solve for x
    x = 206,011,297.94/20,148.71
  6. Step 6: Final answer
    x = 10,224.54

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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.