Home / 21,198.46-31,798.36-10,662.72

Finding the Fourth Proportional to 21,198.46, 31,798.36 and 10,662.72

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Solution

The fourth proportional to 21,198.46, 31,798.36 and 10,662.72 is: 15,994.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.46 : 31,798.36 = 10,662.72 : x
  2. Step 2: Convert to fraction form
    21,198.46/31,798.36 = 10,662.72/x
  3. Step 3: Cross multiply
    21,198.46x = 31,798.36 × 10,662.72
  4. Step 4: Simplify right side
    21,198.46x = 339,057,115.29
  5. Step 5: Solve for x
    x = 339,057,115.29/21,198.46
  6. Step 6: Final answer
    x = 15,994.42

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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.