Home / 10,864.80-16,272.90-5,664.60

Finding the Fourth Proportional to 10,864.80, 16,272.90 and 5,664.60

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Solution

The fourth proportional to 10,864.80, 16,272.90 and 5,664.60 is: 8,484.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.80 : 16,272.90 = 5,664.60 : x
  2. Step 2: Convert to fraction form
    10,864.80/16,272.90 = 5,664.60/x
  3. Step 3: Cross multiply
    10,864.80x = 16,272.90 × 5,664.60
  4. Step 4: Simplify right side
    10,864.80x = 92,179,469.34
  5. Step 5: Solve for x
    x = 92,179,469.34/10,864.80
  6. Step 6: Final answer
    x = 8,484.23

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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.