Home / 12,398.11-17,107.60-7,091.93

Finding the Fourth Proportional to 12,398.11, 17,107.60 and 7,091.93

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Solution

The fourth proportional to 12,398.11, 17,107.60 and 7,091.93 is: 9,785.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.11 : 17,107.60 = 7,091.93 : x
  2. Step 2: Convert to fraction form
    12,398.11/17,107.60 = 7,091.93/x
  3. Step 3: Cross multiply
    12,398.11x = 17,107.60 × 7,091.93
  4. Step 4: Simplify right side
    12,398.11x = 121,325,901.67
  5. Step 5: Solve for x
    x = 121,325,901.67/12,398.11
  6. Step 6: Final answer
    x = 9,785.84

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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.