Home / 20,881.73-31,322.70-5,299.36

Finding the Fourth Proportional to 20,881.73, 31,322.70 and 5,299.36

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Solution

The fourth proportional to 20,881.73, 31,322.70 and 5,299.36 is: 7,949.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.73 : 31,322.70 = 5,299.36 : x
  2. Step 2: Convert to fraction form
    20,881.73/31,322.70 = 5,299.36/x
  3. Step 3: Cross multiply
    20,881.73x = 31,322.70 × 5,299.36
  4. Step 4: Simplify right side
    20,881.73x = 165,990,185.17
  5. Step 5: Solve for x
    x = 165,990,185.17/20,881.73
  6. Step 6: Final answer
    x = 7,949.06

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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.