Home / 10,541.51-15,815.19-3,146.21

Finding the Fourth Proportional to 10,541.51, 15,815.19 and 3,146.21

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Solution

The fourth proportional to 10,541.51, 15,815.19 and 3,146.21 is: 4,720.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,541.51 : 15,815.19 = 3,146.21 : x
  2. Step 2: Convert to fraction form
    10,541.51/15,815.19 = 3,146.21/x
  3. Step 3: Cross multiply
    10,541.51x = 15,815.19 × 3,146.21
  4. Step 4: Simplify right side
    10,541.51x = 49,757,829.85
  5. Step 5: Solve for x
    x = 49,757,829.85/10,541.51
  6. Step 6: Final answer
    x = 4,720.18

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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.