Home / 13,327.67-19,991.40-5,428.33

Finding the Fourth Proportional to 13,327.67, 19,991.40 and 5,428.33

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Solution

The fourth proportional to 13,327.67, 19,991.40 and 5,428.33 is: 8,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327.67 : 19,991.40 = 5,428.33 : x
  2. Step 2: Convert to fraction form
    13,327.67/19,991.40 = 5,428.33/x
  3. Step 3: Cross multiply
    13,327.67x = 19,991.40 × 5,428.33
  4. Step 4: Simplify right side
    13,327.67x = 108,519,886.74
  5. Step 5: Solve for x
    x = 108,519,886.74/13,327.67
  6. Step 6: Final answer
    x = 8,142.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.