Home / 10,211.28-15,318-3,638.16

Finding the Fourth Proportional to 10,211.28, 15,318 and 3,638.16

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Solution

The fourth proportional to 10,211.28, 15,318 and 3,638.16 is: 5,457.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,211.28 : 15,318 = 3,638.16 : x
  2. Step 2: Convert to fraction form
    10,211.28/15,318 = 3,638.16/x
  3. Step 3: Cross multiply
    10,211.28x = 15,318 × 3,638.16
  4. Step 4: Simplify right side
    10,211.28x = 55,729,334.88
  5. Step 5: Solve for x
    x = 55,729,334.88/10,211.28
  6. Step 6: Final answer
    x = 5,457.62

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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.