Home / 13,486.62-20,215.32-6,903.78

Finding the Fourth Proportional to 13,486.62, 20,215.32 and 6,903.78

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Solution

The fourth proportional to 13,486.62, 20,215.32 and 6,903.78 is: 10,348.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.62 : 20,215.32 = 6,903.78 : x
  2. Step 2: Convert to fraction form
    13,486.62/20,215.32 = 6,903.78/x
  3. Step 3: Cross multiply
    13,486.62x = 20,215.32 × 6,903.78
  4. Step 4: Simplify right side
    13,486.62x = 139,562,121.91
  5. Step 5: Solve for x
    x = 139,562,121.91/13,486.62
  6. Step 6: Final answer
    x = 10,348.19

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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.