Home / 20,521.11-28,317.42-11,570.82

Finding the Fourth Proportional to 20,521.11, 28,317.42 and 11,570.82

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Solution

The fourth proportional to 20,521.11, 28,317.42 and 11,570.82 is: 15,966.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.11 : 28,317.42 = 11,570.82 : x
  2. Step 2: Convert to fraction form
    20,521.11/28,317.42 = 11,570.82/x
  3. Step 3: Cross multiply
    20,521.11x = 28,317.42 × 11,570.82
  4. Step 4: Simplify right side
    20,521.11x = 327,655,769.68
  5. Step 5: Solve for x
    x = 327,655,769.68/20,521.11
  6. Step 6: Final answer
    x = 15,966.77

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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.