Home / 31,559.60-43,554.36-18,135.20

Finding the Fourth Proportional to 31,559.60, 43,554.36 and 18,135.20

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Solution

The fourth proportional to 31,559.60, 43,554.36 and 18,135.20 is: 25,027.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,559.60 : 43,554.36 = 18,135.20 : x
  2. Step 2: Convert to fraction form
    31,559.60/43,554.36 = 18,135.20/x
  3. Step 3: Cross multiply
    31,559.60x = 43,554.36 × 18,135.20
  4. Step 4: Simplify right side
    31,559.60x = 789,867,029.47
  5. Step 5: Solve for x
    x = 789,867,029.47/31,559.60
  6. Step 6: Final answer
    x = 25,027.79

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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.