Home / 13,654.33-18,844.79-7,687.17

Finding the Fourth Proportional to 13,654.33, 18,844.79 and 7,687.17

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Solution

The fourth proportional to 13,654.33, 18,844.79 and 7,687.17 is: 10,609.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.33 : 18,844.79 = 7,687.17 : x
  2. Step 2: Convert to fraction form
    13,654.33/18,844.79 = 7,687.17/x
  3. Step 3: Cross multiply
    13,654.33x = 18,844.79 × 7,687.17
  4. Step 4: Simplify right side
    13,654.33x = 144,863,065.91
  5. Step 5: Solve for x
    x = 144,863,065.91/13,654.33
  6. Step 6: Final answer
    x = 10,609.31

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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.