Home / 20,942.97-31,419.32-9,259.53

Finding the Fourth Proportional to 20,942.97, 31,419.32 and 9,259.53

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Solution

The fourth proportional to 20,942.97, 31,419.32 and 9,259.53 is: 13,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.97 : 31,419.32 = 9,259.53 : x
  2. Step 2: Convert to fraction form
    20,942.97/31,419.32 = 9,259.53/x
  3. Step 3: Cross multiply
    20,942.97x = 31,419.32 × 9,259.53
  4. Step 4: Simplify right side
    20,942.97x = 290,928,089.82
  5. Step 5: Solve for x
    x = 290,928,089.82/20,942.97
  6. Step 6: Final answer
    x = 13,891.44

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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.