Home / 10,215.68-15,321.68-2,818.31

Finding the Fourth Proportional to 10,215.68, 15,321.68 and 2,818.31

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Solution

The fourth proportional to 10,215.68, 15,321.68 and 2,818.31 is: 4,226.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.68 : 15,321.68 = 2,818.31 : x
  2. Step 2: Convert to fraction form
    10,215.68/15,321.68 = 2,818.31/x
  3. Step 3: Cross multiply
    10,215.68x = 15,321.68 × 2,818.31
  4. Step 4: Simplify right side
    10,215.68x = 43,181,167.35
  5. Step 5: Solve for x
    x = 43,181,167.35/10,215.68
  6. Step 6: Final answer
    x = 4,226.95

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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.