Home / 10,915.29-16,370.10-3,122.28

Finding the Fourth Proportional to 10,915.29, 16,370.10 and 3,122.28

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Solution

The fourth proportional to 10,915.29, 16,370.10 and 3,122.28 is: 4,682.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.29 : 16,370.10 = 3,122.28 : x
  2. Step 2: Convert to fraction form
    10,915.29/16,370.10 = 3,122.28/x
  3. Step 3: Cross multiply
    10,915.29x = 16,370.10 × 3,122.28
  4. Step 4: Simplify right side
    10,915.29x = 51,112,035.83
  5. Step 5: Solve for x
    x = 51,112,035.83/10,915.29
  6. Step 6: Final answer
    x = 4,682.61

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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.