Home / 31,899.58-47,849.80-12,179.20

Finding the Fourth Proportional to 31,899.58, 47,849.80 and 12,179.20

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Solution

The fourth proportional to 31,899.58, 47,849.80 and 12,179.20 is: 18,268.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,899.58 : 47,849.80 = 12,179.20 : x
  2. Step 2: Convert to fraction form
    31,899.58/47,849.80 = 12,179.20/x
  3. Step 3: Cross multiply
    31,899.58x = 47,849.80 × 12,179.20
  4. Step 4: Simplify right side
    31,899.58x = 582,772,284.16
  5. Step 5: Solve for x
    x = 582,772,284.16/31,899.58
  6. Step 6: Final answer
    x = 18,268.96

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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.