Home / 13,654.98-18,839.79-7,988.22

Finding the Fourth Proportional to 13,654.98, 18,839.79 and 7,988.22

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Solution

The fourth proportional to 13,654.98, 18,839.79 and 7,988.22 is: 11,021.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.98 : 18,839.79 = 7,988.22 : x
  2. Step 2: Convert to fraction form
    13,654.98/18,839.79 = 7,988.22/x
  3. Step 3: Cross multiply
    13,654.98x = 18,839.79 × 7,988.22
  4. Step 4: Simplify right side
    13,654.98x = 150,496,387.27
  5. Step 5: Solve for x
    x = 150,496,387.27/13,654.98
  6. Step 6: Final answer
    x = 11,021.36

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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.