Home / 21,310.05-31,984.77-10,787.46

Finding the Fourth Proportional to 21,310.05, 31,984.77 and 10,787.46

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Solution

The fourth proportional to 21,310.05, 31,984.77 and 10,787.46 is: 16,191.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.05 : 31,984.77 = 10,787.46 : x
  2. Step 2: Convert to fraction form
    21,310.05/31,984.77 = 10,787.46/x
  3. Step 3: Cross multiply
    21,310.05x = 31,984.77 × 10,787.46
  4. Step 4: Simplify right side
    21,310.05x = 345,034,267.06
  5. Step 5: Solve for x
    x = 345,034,267.06/21,310.05
  6. Step 6: Final answer
    x = 16,191.15

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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.