Home / 21,660.90-32,488.56-9,186

Finding the Fourth Proportional to 21,660.90, 32,488.56 and 9,186

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Solution

The fourth proportional to 21,660.90, 32,488.56 and 9,186 is: 13,777.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.90 : 32,488.56 = 9,186 : x
  2. Step 2: Convert to fraction form
    21,660.90/32,488.56 = 9,186/x
  3. Step 3: Cross multiply
    21,660.90x = 32,488.56 × 9,186
  4. Step 4: Simplify right side
    21,660.90x = 298,439,912.16
  5. Step 5: Solve for x
    x = 298,439,912.16/21,660.90
  6. Step 6: Final answer
    x = 13,777.82

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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.