Home / 10,081.31-15,119.51-3,155.81

Finding the Fourth Proportional to 10,081.31, 15,119.51 and 3,155.81

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Solution

The fourth proportional to 10,081.31, 15,119.51 and 3,155.81 is: 4,732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.31 : 15,119.51 = 3,155.81 : x
  2. Step 2: Convert to fraction form
    10,081.31/15,119.51 = 3,155.81/x
  3. Step 3: Cross multiply
    10,081.31x = 15,119.51 × 3,155.81
  4. Step 4: Simplify right side
    10,081.31x = 47,714,209.48
  5. Step 5: Solve for x
    x = 47,714,209.48/10,081.31
  6. Step 6: Final answer
    x = 4,732.94

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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.