Home / 20,836.08-28,753.76-11,404.64

Finding the Fourth Proportional to 20,836.08, 28,753.76 and 11,404.64

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Solution

The fourth proportional to 20,836.08, 28,753.76 and 11,404.64 is: 15,738.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.08 : 28,753.76 = 11,404.64 : x
  2. Step 2: Convert to fraction form
    20,836.08/28,753.76 = 11,404.64/x
  3. Step 3: Cross multiply
    20,836.08x = 28,753.76 × 11,404.64
  4. Step 4: Simplify right side
    20,836.08x = 327,926,281.45
  5. Step 5: Solve for x
    x = 327,926,281.45/20,836.08
  6. Step 6: Final answer
    x = 15,738.39

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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.