Home / 10,212.81-15,321.92-5,530.74

Finding the Fourth Proportional to 10,212.81, 15,321.92 and 5,530.74

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Solution

The fourth proportional to 10,212.81, 15,321.92 and 5,530.74 is: 8,297.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.81 : 15,321.92 = 5,530.74 : x
  2. Step 2: Convert to fraction form
    10,212.81/15,321.92 = 5,530.74/x
  3. Step 3: Cross multiply
    10,212.81x = 15,321.92 × 5,530.74
  4. Step 4: Simplify right side
    10,212.81x = 84,741,528.17
  5. Step 5: Solve for x
    x = 84,741,528.17/10,212.81
  6. Step 6: Final answer
    x = 8,297.57

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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.