Home / 10,517.90-15,774.14-3,120.60

Finding the Fourth Proportional to 10,517.90, 15,774.14 and 3,120.60

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Solution

The fourth proportional to 10,517.90, 15,774.14 and 3,120.60 is: 4,680.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.90 : 15,774.14 = 3,120.60 : x
  2. Step 2: Convert to fraction form
    10,517.90/15,774.14 = 3,120.60/x
  3. Step 3: Cross multiply
    10,517.90x = 15,774.14 × 3,120.60
  4. Step 4: Simplify right side
    10,517.90x = 49,224,848.24
  5. Step 5: Solve for x
    x = 49,224,848.24/10,517.90
  6. Step 6: Final answer
    x = 4,680.10

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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.