Home / 13,960.36-19,265.88-7,991.20

Finding the Fourth Proportional to 13,960.36, 19,265.88 and 7,991.20

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Solution

The fourth proportional to 13,960.36, 19,265.88 and 7,991.20 is: 11,028.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,960.36 : 19,265.88 = 7,991.20 : x
  2. Step 2: Convert to fraction form
    13,960.36/19,265.88 = 7,991.20/x
  3. Step 3: Cross multiply
    13,960.36x = 19,265.88 × 7,991.20
  4. Step 4: Simplify right side
    13,960.36x = 153,957,500.26
  5. Step 5: Solve for x
    x = 153,957,500.26/13,960.36
  6. Step 6: Final answer
    x = 11,028.19

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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.