Home / 11,539.20-17,308.80-4,143.90

Finding the Fourth Proportional to 11,539.20, 17,308.80 and 4,143.90

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Solution

The fourth proportional to 11,539.20, 17,308.80 and 4,143.90 is: 6,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,539.20 : 17,308.80 = 4,143.90 : x
  2. Step 2: Convert to fraction form
    11,539.20/17,308.80 = 4,143.90/x
  3. Step 3: Cross multiply
    11,539.20x = 17,308.80 × 4,143.90
  4. Step 4: Simplify right side
    11,539.20x = 71,725,936.32
  5. Step 5: Solve for x
    x = 71,725,936.32/11,539.20
  6. Step 6: Final answer
    x = 6,215.85

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1.5x scale

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.