Home / 12,385.32-17,091.84-6,720.04

Finding the Fourth Proportional to 12,385.32, 17,091.84 and 6,720.04

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Solution

The fourth proportional to 12,385.32, 17,091.84 and 6,720.04 is: 9,273.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.32 : 17,091.84 = 6,720.04 : x
  2. Step 2: Convert to fraction form
    12,385.32/17,091.84 = 6,720.04/x
  3. Step 3: Cross multiply
    12,385.32x = 17,091.84 × 6,720.04
  4. Step 4: Simplify right side
    12,385.32x = 114,857,848.47
  5. Step 5: Solve for x
    x = 114,857,848.47/12,385.32
  6. Step 6: Final answer
    x = 9,273.71

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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.