Home / 13,539.12-20,305-4,772.88

Finding the Fourth Proportional to 13,539.12, 20,305 and 4,772.88

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Solution

The fourth proportional to 13,539.12, 20,305 and 4,772.88 is: 7,158.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.12 : 20,305 = 4,772.88 : x
  2. Step 2: Convert to fraction form
    13,539.12/20,305 = 4,772.88/x
  3. Step 3: Cross multiply
    13,539.12x = 20,305 × 4,772.88
  4. Step 4: Simplify right side
    13,539.12x = 96,913,328.40
  5. Step 5: Solve for x
    x = 96,913,328.40/13,539.12
  6. Step 6: Final answer
    x = 7,158.02

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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.