Home / 12,385.17-17,091.42-6,719.88

Finding the Fourth Proportional to 12,385.17, 17,091.42 and 6,719.88

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Solution

The fourth proportional to 12,385.17, 17,091.42 and 6,719.88 is: 9,273.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.17 : 17,091.42 = 6,719.88 : x
  2. Step 2: Convert to fraction form
    12,385.17/17,091.42 = 6,719.88/x
  3. Step 3: Cross multiply
    12,385.17x = 17,091.42 × 6,719.88
  4. Step 4: Simplify right side
    12,385.17x = 114,852,291.43
  5. Step 5: Solve for x
    x = 114,852,291.43/12,385.17
  6. Step 6: Final answer
    x = 9,273.37

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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.