Home / 20,997.05-31,503.24-9,757.58

Finding the Fourth Proportional to 20,997.05, 31,503.24 and 9,757.58

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Solution

The fourth proportional to 20,997.05, 31,503.24 and 9,757.58 is: 14,639.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.05 : 31,503.24 = 9,757.58 : x
  2. Step 2: Convert to fraction form
    20,997.05/31,503.24 = 9,757.58/x
  3. Step 3: Cross multiply
    20,997.05x = 31,503.24 × 9,757.58
  4. Step 4: Simplify right side
    20,997.05x = 307,395,227.04
  5. Step 5: Solve for x
    x = 307,395,227.04/20,997.05
  6. Step 6: Final answer
    x = 14,639.93

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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.