Home / 10,915.31-15,063.12-6,135.28

Finding the Fourth Proportional to 10,915.31, 15,063.12 and 6,135.28

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Solution

The fourth proportional to 10,915.31, 15,063.12 and 6,135.28 is: 8,466.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.31 : 15,063.12 = 6,135.28 : x
  2. Step 2: Convert to fraction form
    10,915.31/15,063.12 = 6,135.28/x
  3. Step 3: Cross multiply
    10,915.31x = 15,063.12 × 6,135.28
  4. Step 4: Simplify right side
    10,915.31x = 92,416,458.87
  5. Step 5: Solve for x
    x = 92,416,458.87/10,915.31
  6. Step 6: Final answer
    x = 8,466.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.