Home / 15,936.09-21,991.48-8,862.36

Finding the Fourth Proportional to 15,936.09, 21,991.48 and 8,862.36

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Solution

The fourth proportional to 15,936.09, 21,991.48 and 8,862.36 is: 12,229.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936.09 : 21,991.48 = 8,862.36 : x
  2. Step 2: Convert to fraction form
    15,936.09/21,991.48 = 8,862.36/x
  3. Step 3: Cross multiply
    15,936.09x = 21,991.48 × 8,862.36
  4. Step 4: Simplify right side
    15,936.09x = 194,896,412.69
  5. Step 5: Solve for x
    x = 194,896,412.69/15,936.09
  6. Step 6: Final answer
    x = 12,229.88

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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.