Home / 21,249.40-31,873.92-8,776.12

Finding the Fourth Proportional to 21,249.40, 31,873.92 and 8,776.12

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Solution

The fourth proportional to 21,249.40, 31,873.92 and 8,776.12 is: 13,164.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.40 : 31,873.92 = 8,776.12 : x
  2. Step 2: Convert to fraction form
    21,249.40/31,873.92 = 8,776.12/x
  3. Step 3: Cross multiply
    21,249.40x = 31,873.92 × 8,776.12
  4. Step 4: Simplify right side
    21,249.40x = 279,729,346.79
  5. Step 5: Solve for x
    x = 279,729,346.79/21,249.40
  6. Step 6: Final answer
    x = 13,164.11

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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.