Home / 20,834.63-28,751.78-11,403.19

Finding the Fourth Proportional to 20,834.63, 28,751.78 and 11,403.19

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Solution

The fourth proportional to 20,834.63, 28,751.78 and 11,403.19 is: 15,736.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.63 : 28,751.78 = 11,403.19 : x
  2. Step 2: Convert to fraction form
    20,834.63/28,751.78 = 11,403.19/x
  3. Step 3: Cross multiply
    20,834.63x = 28,751.78 × 11,403.19
  4. Step 4: Simplify right side
    20,834.63x = 327,861,966.81
  5. Step 5: Solve for x
    x = 327,861,966.81/20,834.63
  6. Step 6: Final answer
    x = 15,736.40

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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.