Home / 15,843.49-21,857.78-10,177.45

Finding the Fourth Proportional to 15,843.49, 21,857.78 and 10,177.45

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Solution

The fourth proportional to 15,843.49, 21,857.78 and 10,177.45 is: 14,040.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,843.49 : 21,857.78 = 10,177.45 : x
  2. Step 2: Convert to fraction form
    15,843.49/21,857.78 = 10,177.45/x
  3. Step 3: Cross multiply
    15,843.49x = 21,857.78 × 10,177.45
  4. Step 4: Simplify right side
    15,843.49x = 222,456,433.86
  5. Step 5: Solve for x
    x = 222,456,433.86/15,843.49
  6. Step 6: Final answer
    x = 14,040.88

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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.