Home / 21,908.84-32,877.22-7,868.56

Finding the Fourth Proportional to 21,908.84, 32,877.22 and 7,868.56

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Solution

The fourth proportional to 21,908.84, 32,877.22 and 7,868.56 is: 11,807.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.84 : 32,877.22 = 7,868.56 : x
  2. Step 2: Convert to fraction form
    21,908.84/32,877.22 = 7,868.56/x
  3. Step 3: Cross multiply
    21,908.84x = 32,877.22 × 7,868.56
  4. Step 4: Simplify right side
    21,908.84x = 258,696,378.20
  5. Step 5: Solve for x
    x = 258,696,378.20/21,908.84
  6. Step 6: Final answer
    x = 11,807.85

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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.