Home / 31,550.81-43,540.02-18,122.93

Finding the Fourth Proportional to 31,550.81, 43,540.02 and 18,122.93

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Solution

The fourth proportional to 31,550.81, 43,540.02 and 18,122.93 is: 25,009.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,550.81 : 43,540.02 = 18,122.93 : x
  2. Step 2: Convert to fraction form
    31,550.81/43,540.02 = 18,122.93/x
  3. Step 3: Cross multiply
    31,550.81x = 43,540.02 × 18,122.93
  4. Step 4: Simplify right side
    31,550.81x = 789,072,734.66
  5. Step 5: Solve for x
    x = 789,072,734.66/31,550.81
  6. Step 6: Final answer
    x = 25,009.59

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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.