Home / 28,257.21-38,996.82-15,681.96

Finding the Fourth Proportional to 28,257.21, 38,996.82 and 15,681.96

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Solution

The fourth proportional to 28,257.21, 38,996.82 and 15,681.96 is: 21,642.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.21 : 38,996.82 = 15,681.96 : x
  2. Step 2: Convert to fraction form
    28,257.21/38,996.82 = 15,681.96/x
  3. Step 3: Cross multiply
    28,257.21x = 38,996.82 × 15,681.96
  4. Step 4: Simplify right side
    28,257.21x = 611,546,571.37
  5. Step 5: Solve for x
    x = 611,546,571.37/28,257.21
  6. Step 6: Final answer
    x = 21,642.14

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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.