Home / 20,933.06-28,888.18-11,501.88

Finding the Fourth Proportional to 20,933.06, 28,888.18 and 11,501.88

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Solution

The fourth proportional to 20,933.06, 28,888.18 and 11,501.88 is: 15,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.06 : 28,888.18 = 11,501.88 : x
  2. Step 2: Convert to fraction form
    20,933.06/28,888.18 = 11,501.88/x
  3. Step 3: Cross multiply
    20,933.06x = 28,888.18 × 11,501.88
  4. Step 4: Simplify right side
    20,933.06x = 332,268,379.78
  5. Step 5: Solve for x
    x = 332,268,379.78/20,933.06
  6. Step 6: Final answer
    x = 15,872.90

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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.