Home / 20,834.03-28,749.85-11,400.77

Finding the Fourth Proportional to 20,834.03, 28,749.85 and 11,400.77

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Solution

The fourth proportional to 20,834.03, 28,749.85 and 11,400.77 is: 15,732.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.03 : 28,749.85 = 11,400.77 : x
  2. Step 2: Convert to fraction form
    20,834.03/28,749.85 = 11,400.77/x
  3. Step 3: Cross multiply
    20,834.03x = 28,749.85 × 11,400.77
  4. Step 4: Simplify right side
    20,834.03x = 327,770,427.38
  5. Step 5: Solve for x
    x = 327,770,427.38/20,834.03
  6. Step 6: Final answer
    x = 15,732.45

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1.5x scale

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.