Home / 20,834.10-28,751.46-11,402.64

Finding the Fourth Proportional to 20,834.10, 28,751.46 and 11,402.64

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Solution

The fourth proportional to 20,834.10, 28,751.46 and 11,402.64 is: 15,735.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.10 : 28,751.46 = 11,402.64 : x
  2. Step 2: Convert to fraction form
    20,834.10/28,751.46 = 11,402.64/x
  3. Step 3: Cross multiply
    20,834.10x = 28,751.46 × 11,402.64
  4. Step 4: Simplify right side
    20,834.10x = 327,842,547.85
  5. Step 5: Solve for x
    x = 327,842,547.85/20,834.10
  6. Step 6: Final answer
    x = 15,735.86

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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.