Home / 13,028.05-17,973.12-8,781.85

Finding the Fourth Proportional to 13,028.05, 17,973.12 and 8,781.85

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Solution

The fourth proportional to 13,028.05, 17,973.12 and 8,781.85 is: 12,115.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,028.05 : 17,973.12 = 8,781.85 : x
  2. Step 2: Convert to fraction form
    13,028.05/17,973.12 = 8,781.85/x
  3. Step 3: Cross multiply
    13,028.05x = 17,973.12 × 8,781.85
  4. Step 4: Simplify right side
    13,028.05x = 157,837,243.87
  5. Step 5: Solve for x
    x = 157,837,243.87/13,028.05
  6. Step 6: Final answer
    x = 12,115.19

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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.