Home / 10,515.51-15,773.31-3,120.02

Finding the Fourth Proportional to 10,515.51, 15,773.31 and 3,120.02

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Solution

The fourth proportional to 10,515.51, 15,773.31 and 3,120.02 is: 4,680.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.51 : 15,773.31 = 3,120.02 : x
  2. Step 2: Convert to fraction form
    10,515.51/15,773.31 = 3,120.02/x
  3. Step 3: Cross multiply
    10,515.51x = 15,773.31 × 3,120.02
  4. Step 4: Simplify right side
    10,515.51x = 49,213,042.67
  5. Step 5: Solve for x
    x = 49,213,042.67/10,515.51
  6. Step 6: Final answer
    x = 4,680.04

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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.