Home / 30,539.86-42,144.96-17,111.21

Finding the Fourth Proportional to 30,539.86, 42,144.96 and 17,111.21

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Solution

The fourth proportional to 30,539.86, 42,144.96 and 17,111.21 is: 23,613.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,539.86 : 42,144.96 = 17,111.21 : x
  2. Step 2: Convert to fraction form
    30,539.86/42,144.96 = 17,111.21/x
  3. Step 3: Cross multiply
    30,539.86x = 42,144.96 × 17,111.21
  4. Step 4: Simplify right side
    30,539.86x = 721,151,261.00
  5. Step 5: Solve for x
    x = 721,151,261.00/30,539.86
  6. Step 6: Final answer
    x = 23,613.44

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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.