Home / 10,311.40-15,467.91-2,915.74

Finding the Fourth Proportional to 10,311.40, 15,467.91 and 2,915.74

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Solution

The fourth proportional to 10,311.40, 15,467.91 and 2,915.74 is: 4,373.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,311.40 : 15,467.91 = 2,915.74 : x
  2. Step 2: Convert to fraction form
    10,311.40/15,467.91 = 2,915.74/x
  3. Step 3: Cross multiply
    10,311.40x = 15,467.91 × 2,915.74
  4. Step 4: Simplify right side
    10,311.40x = 45,100,403.90
  5. Step 5: Solve for x
    x = 45,100,403.90/10,311.40
  6. Step 6: Final answer
    x = 4,373.84

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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.