Home / 20,835.27-28,751.57-11,402.01

Finding the Fourth Proportional to 20,835.27, 28,751.57 and 11,402.01

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Solution

The fourth proportional to 20,835.27, 28,751.57 and 11,402.01 is: 15,734.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.27 : 28,751.57 = 11,402.01 : x
  2. Step 2: Convert to fraction form
    20,835.27/28,751.57 = 11,402.01/x
  3. Step 3: Cross multiply
    20,835.27x = 28,751.57 × 11,402.01
  4. Step 4: Simplify right side
    20,835.27x = 327,825,631.65
  5. Step 5: Solve for x
    x = 327,825,631.65/20,835.27
  6. Step 6: Final answer
    x = 15,734.17

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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.