Home / 13,385.97-20,078.28-6,360.84

Finding the Fourth Proportional to 13,385.97, 20,078.28 and 6,360.84

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Solution

The fourth proportional to 13,385.97, 20,078.28 and 6,360.84 is: 9,540.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.97 : 20,078.28 = 6,360.84 : x
  2. Step 2: Convert to fraction form
    13,385.97/20,078.28 = 6,360.84/x
  3. Step 3: Cross multiply
    13,385.97x = 20,078.28 × 6,360.84
  4. Step 4: Simplify right side
    13,385.97x = 127,714,726.56
  5. Step 5: Solve for x
    x = 127,714,726.56/13,385.97
  6. Step 6: Final answer
    x = 9,540.94

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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.