Home / 10,619.89-15,929.22-5,077.06

Finding the Fourth Proportional to 10,619.89, 15,929.22 and 5,077.06

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Solution

The fourth proportional to 10,619.89, 15,929.22 and 5,077.06 is: 7,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,619.89 : 15,929.22 = 5,077.06 : x
  2. Step 2: Convert to fraction form
    10,619.89/15,929.22 = 5,077.06/x
  3. Step 3: Cross multiply
    10,619.89x = 15,929.22 × 5,077.06
  4. Step 4: Simplify right side
    10,619.89x = 80,873,605.69
  5. Step 5: Solve for x
    x = 80,873,605.69/10,619.89
  6. Step 6: Final answer
    x = 7,615.30

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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.