Home / 21,288.42-31,936.48-8,801.66

Finding the Fourth Proportional to 21,288.42, 31,936.48 and 8,801.66

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Solution

The fourth proportional to 21,288.42, 31,936.48 and 8,801.66 is: 13,204.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.42 : 31,936.48 = 8,801.66 : x
  2. Step 2: Convert to fraction form
    21,288.42/31,936.48 = 8,801.66/x
  3. Step 3: Cross multiply
    21,288.42x = 31,936.48 × 8,801.66
  4. Step 4: Simplify right side
    21,288.42x = 281,094,096.39
  5. Step 5: Solve for x
    x = 281,094,096.39/21,288.42
  6. Step 6: Final answer
    x = 13,204.08

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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.