Home / 20,893.42-31,330.88-9,791.14

Finding the Fourth Proportional to 20,893.42, 31,330.88 and 9,791.14

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Solution

The fourth proportional to 20,893.42, 31,330.88 and 9,791.14 is: 14,682.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.42 : 31,330.88 = 9,791.14 : x
  2. Step 2: Convert to fraction form
    20,893.42/31,330.88 = 9,791.14/x
  3. Step 3: Cross multiply
    20,893.42x = 31,330.88 × 9,791.14
  4. Step 4: Simplify right side
    20,893.42x = 306,765,032.40
  5. Step 5: Solve for x
    x = 306,765,032.40/20,893.42
  6. Step 6: Final answer
    x = 14,682.38

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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.