Home / 12,385.32-17,091.36-6,719.80

Finding the Fourth Proportional to 12,385.32, 17,091.36 and 6,719.80

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Solution

The fourth proportional to 12,385.32, 17,091.36 and 6,719.80 is: 9,273.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.32 : 17,091.36 = 6,719.80 : x
  2. Step 2: Convert to fraction form
    12,385.32/17,091.36 = 6,719.80/x
  3. Step 3: Cross multiply
    12,385.32x = 17,091.36 × 6,719.80
  4. Step 4: Simplify right side
    12,385.32x = 114,850,520.93
  5. Step 5: Solve for x
    x = 114,850,520.93/12,385.32
  6. Step 6: Final answer
    x = 9,273.12

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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.