Home / 20,412.11-28,166.77-11,457.56

Finding the Fourth Proportional to 20,412.11, 28,166.77 and 11,457.56

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Solution

The fourth proportional to 20,412.11, 28,166.77 and 11,457.56 is: 15,810.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.11 : 28,166.77 = 11,457.56 : x
  2. Step 2: Convert to fraction form
    20,412.11/28,166.77 = 11,457.56/x
  3. Step 3: Cross multiply
    20,412.11x = 28,166.77 × 11,457.56
  4. Step 4: Simplify right side
    20,412.11x = 322,722,499.05
  5. Step 5: Solve for x
    x = 322,722,499.05/20,412.11
  6. Step 6: Final answer
    x = 15,810.34

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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.