Home / 13,957.28-19,260.96-7,991.36

Finding the Fourth Proportional to 13,957.28, 19,260.96 and 7,991.36

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Solution

The fourth proportional to 13,957.28, 19,260.96 and 7,991.36 is: 11,028.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,957.28 : 19,260.96 = 7,991.36 : x
  2. Step 2: Convert to fraction form
    13,957.28/19,260.96 = 7,991.36/x
  3. Step 3: Cross multiply
    13,957.28x = 19,260.96 × 7,991.36
  4. Step 4: Simplify right side
    13,957.28x = 153,921,265.31
  5. Step 5: Solve for x
    x = 153,921,265.31/13,957.28
  6. Step 6: Final answer
    x = 11,028.03

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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.