Home / 10,140.48-15,211.26-3,815.28

Finding the Fourth Proportional to 10,140.48, 15,211.26 and 3,815.28

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Solution

The fourth proportional to 10,140.48, 15,211.26 and 3,815.28 is: 5,723.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.48 : 15,211.26 = 3,815.28 : x
  2. Step 2: Convert to fraction form
    10,140.48/15,211.26 = 3,815.28/x
  3. Step 3: Cross multiply
    10,140.48x = 15,211.26 × 3,815.28
  4. Step 4: Simplify right side
    10,140.48x = 58,035,216.05
  5. Step 5: Solve for x
    x = 58,035,216.05/10,140.48
  6. Step 6: Final answer
    x = 5,723.12

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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.