Home / 31,003.86-42,713-21,556.02

Finding the Fourth Proportional to 31,003.86, 42,713 and 21,556.02

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Solution

The fourth proportional to 31,003.86, 42,713 and 21,556.02 is: 29,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,003.86 : 42,713 = 21,556.02 : x
  2. Step 2: Convert to fraction form
    31,003.86/42,713 = 21,556.02/x
  3. Step 3: Cross multiply
    31,003.86x = 42,713 × 21,556.02
  4. Step 4: Simplify right side
    31,003.86x = 920,722,282.26
  5. Step 5: Solve for x
    x = 920,722,282.26/31,003.86
  6. Step 6: Final answer
    x = 29,697.02

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