Home / 13,480.62-20,206.32-6,897.78

Finding the Fourth Proportional to 13,480.62, 20,206.32 and 6,897.78

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Solution

The fourth proportional to 13,480.62, 20,206.32 and 6,897.78 is: 10,339.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.62 : 20,206.32 = 6,897.78 : x
  2. Step 2: Convert to fraction form
    13,480.62/20,206.32 = 6,897.78/x
  3. Step 3: Cross multiply
    13,480.62x = 20,206.32 × 6,897.78
  4. Step 4: Simplify right side
    13,480.62x = 139,378,749.97
  5. Step 5: Solve for x
    x = 139,378,749.97/13,480.62
  6. Step 6: Final answer
    x = 10,339.19

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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.