Home / 10,915.56-15,063.54-6,199.86

Finding the Fourth Proportional to 10,915.56, 15,063.54 and 6,199.86

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Solution

The fourth proportional to 10,915.56, 15,063.54 and 6,199.86 is: 8,555.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.56 : 15,063.54 = 6,199.86 : x
  2. Step 2: Convert to fraction form
    10,915.56/15,063.54 = 6,199.86/x
  3. Step 3: Cross multiply
    10,915.56x = 15,063.54 × 6,199.86
  4. Step 4: Simplify right side
    10,915.56x = 93,391,839.10
  5. Step 5: Solve for x
    x = 93,391,839.10/10,915.56
  6. Step 6: Final answer
    x = 8,555.84

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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.