Home / 31,539.54-43,523.10-18,111.90

Finding the Fourth Proportional to 31,539.54, 43,523.10 and 18,111.90

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Solution

The fourth proportional to 31,539.54, 43,523.10 and 18,111.90 is: 24,993.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,539.54 : 43,523.10 = 18,111.90 : x
  2. Step 2: Convert to fraction form
    31,539.54/43,523.10 = 18,111.90/x
  3. Step 3: Cross multiply
    31,539.54x = 43,523.10 × 18,111.90
  4. Step 4: Simplify right side
    31,539.54x = 788,286,034.89
  5. Step 5: Solve for x
    x = 788,286,034.89/31,539.54
  6. Step 6: Final answer
    x = 24,993.58

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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.