Home / 13,091.35-18,066.10-7,122.96

Finding the Fourth Proportional to 13,091.35, 18,066.10 and 7,122.96

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Solution

The fourth proportional to 13,091.35, 18,066.10 and 7,122.96 is: 9,829.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.35 : 18,066.10 = 7,122.96 : x
  2. Step 2: Convert to fraction form
    13,091.35/18,066.10 = 7,122.96/x
  3. Step 3: Cross multiply
    13,091.35x = 18,066.10 × 7,122.96
  4. Step 4: Simplify right side
    13,091.35x = 128,684,107.66
  5. Step 5: Solve for x
    x = 128,684,107.66/13,091.35
  6. Step 6: Final answer
    x = 9,829.71

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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.