Home / 31,027.12-42,817.71-18,449.44

Finding the Fourth Proportional to 31,027.12, 42,817.71 and 18,449.44

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Solution

The fourth proportional to 31,027.12, 42,817.71 and 18,449.44 is: 25,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,027.12 : 42,817.71 = 18,449.44 : x
  2. Step 2: Convert to fraction form
    31,027.12/42,817.71 = 18,449.44/x
  3. Step 3: Cross multiply
    31,027.12x = 42,817.71 × 18,449.44
  4. Step 4: Simplify right side
    31,027.12x = 789,962,733.72
  5. Step 5: Solve for x
    x = 789,962,733.72/31,027.12
  6. Step 6: Final answer
    x = 25,460.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.