Home / 10,191.31-15,262.25-5,180.51

Finding the Fourth Proportional to 10,191.31, 15,262.25 and 5,180.51

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Solution

The fourth proportional to 10,191.31, 15,262.25 and 5,180.51 is: 7,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,191.31 : 15,262.25 = 5,180.51 : x
  2. Step 2: Convert to fraction form
    10,191.31/15,262.25 = 5,180.51/x
  3. Step 3: Cross multiply
    10,191.31x = 15,262.25 × 5,180.51
  4. Step 4: Simplify right side
    10,191.31x = 79,066,251.00
  5. Step 5: Solve for x
    x = 79,066,251.00/10,191.31
  6. Step 6: Final answer
    x = 7,758.20

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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.