Home / 31,129.21-42,958.29-16,982.02

Finding the Fourth Proportional to 31,129.21, 42,958.29 and 16,982.02

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Solution

The fourth proportional to 31,129.21, 42,958.29 and 16,982.02 is: 23,435.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.21 : 42,958.29 = 16,982.02 : x
  2. Step 2: Convert to fraction form
    31,129.21/42,958.29 = 16,982.02/x
  3. Step 3: Cross multiply
    31,129.21x = 42,958.29 × 16,982.02
  4. Step 4: Simplify right side
    31,129.21x = 729,518,539.95
  5. Step 5: Solve for x
    x = 729,518,539.95/31,129.21
  6. Step 6: Final answer
    x = 23,435.18

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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.