Home / 13,211.16-19,819.56-3,851.28

Finding the Fourth Proportional to 13,211.16, 19,819.56 and 3,851.28

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Solution

The fourth proportional to 13,211.16, 19,819.56 and 3,851.28 is: 5,777.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.16 : 19,819.56 = 3,851.28 : x
  2. Step 2: Convert to fraction form
    13,211.16/19,819.56 = 3,851.28/x
  3. Step 3: Cross multiply
    13,211.16x = 19,819.56 × 3,851.28
  4. Step 4: Simplify right side
    13,211.16x = 76,330,675.04
  5. Step 5: Solve for x
    x = 76,330,675.04/13,211.16
  6. Step 6: Final answer
    x = 5,777.74

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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.