Home / 12,385.20-17,091.55-6,796.20

Finding the Fourth Proportional to 12,385.20, 17,091.55 and 6,796.20

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Solution

The fourth proportional to 12,385.20, 17,091.55 and 6,796.20 is: 9,378.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.20 : 17,091.55 = 6,796.20 : x
  2. Step 2: Convert to fraction form
    12,385.20/17,091.55 = 6,796.20/x
  3. Step 3: Cross multiply
    12,385.20x = 17,091.55 × 6,796.20
  4. Step 4: Simplify right side
    12,385.20x = 116,157,592.11
  5. Step 5: Solve for x
    x = 116,157,592.11/12,385.20
  6. Step 6: Final answer
    x = 9,378.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.