Home / 20,835.63-28,753.16-11,404.19

Finding the Fourth Proportional to 20,835.63, 28,753.16 and 11,404.19

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Solution

The fourth proportional to 20,835.63, 28,753.16 and 11,404.19 is: 15,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.63 : 28,753.16 = 11,404.19 : x
  2. Step 2: Convert to fraction form
    20,835.63/28,753.16 = 11,404.19/x
  3. Step 3: Cross multiply
    20,835.63x = 28,753.16 × 11,404.19
  4. Step 4: Simplify right side
    20,835.63x = 327,906,499.74
  5. Step 5: Solve for x
    x = 327,906,499.74/20,835.63
  6. Step 6: Final answer
    x = 15,737.78

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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.