Home / 10,122.60-15,176.70-3,880.20

Finding the Fourth Proportional to 10,122.60, 15,176.70 and 3,880.20

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Solution

The fourth proportional to 10,122.60, 15,176.70 and 3,880.20 is: 5,817.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.60 : 15,176.70 = 3,880.20 : x
  2. Step 2: Convert to fraction form
    10,122.60/15,176.70 = 3,880.20/x
  3. Step 3: Cross multiply
    10,122.60x = 15,176.70 × 3,880.20
  4. Step 4: Simplify right side
    10,122.60x = 58,888,631.34
  5. Step 5: Solve for x
    x = 58,888,631.34/10,122.60
  6. Step 6: Final answer
    x = 5,817.54

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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.