Home / 15,853.42-21,857.82-10,178.14

Finding the Fourth Proportional to 15,853.42, 21,857.82 and 10,178.14

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Solution

The fourth proportional to 15,853.42, 21,857.82 and 10,178.14 is: 14,033.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853.42 : 21,857.82 = 10,178.14 : x
  2. Step 2: Convert to fraction form
    15,853.42/21,857.82 = 10,178.14/x
  3. Step 3: Cross multiply
    15,853.42x = 21,857.82 × 10,178.14
  4. Step 4: Simplify right side
    15,853.42x = 222,471,952.05
  5. Step 5: Solve for x
    x = 222,471,952.05/15,853.42
  6. Step 6: Final answer
    x = 14,033.06

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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.