Home / 20,869.96-31,287.66-10,493.32

Finding the Fourth Proportional to 20,869.96, 31,287.66 and 10,493.32

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Solution

The fourth proportional to 20,869.96, 31,287.66 and 10,493.32 is: 15,731.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.96 : 31,287.66 = 10,493.32 : x
  2. Step 2: Convert to fraction form
    20,869.96/31,287.66 = 10,493.32/x
  3. Step 3: Cross multiply
    20,869.96x = 31,287.66 × 10,493.32
  4. Step 4: Simplify right side
    20,869.96x = 328,311,428.43
  5. Step 5: Solve for x
    x = 328,311,428.43/20,869.96
  6. Step 6: Final answer
    x = 15,731.29

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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.