Home / 21,251.04-31,857.12-10,860.36

Finding the Fourth Proportional to 21,251.04, 31,857.12 and 10,860.36

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Solution

The fourth proportional to 21,251.04, 31,857.12 and 10,860.36 is: 16,280.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.04 : 31,857.12 = 10,860.36 : x
  2. Step 2: Convert to fraction form
    21,251.04/31,857.12 = 10,860.36/x
  3. Step 3: Cross multiply
    21,251.04x = 31,857.12 × 10,860.36
  4. Step 4: Simplify right side
    21,251.04x = 345,979,791.76
  5. Step 5: Solve for x
    x = 345,979,791.76/21,251.04
  6. Step 6: Final answer
    x = 16,280.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.