Home / 27,857.59-38,439.41-15,918.62

Finding the Fourth Proportional to 27,857.59, 38,439.41 and 15,918.62

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Solution

The fourth proportional to 27,857.59, 38,439.41 and 15,918.62 is: 21,965.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,857.59 : 38,439.41 = 15,918.62 : x
  2. Step 2: Convert to fraction form
    27,857.59/38,439.41 = 15,918.62/x
  3. Step 3: Cross multiply
    27,857.59x = 38,439.41 × 15,918.62
  4. Step 4: Simplify right side
    27,857.59x = 611,902,185.12
  5. Step 5: Solve for x
    x = 611,902,185.12/27,857.59
  6. Step 6: Final answer
    x = 21,965.37

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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.