Home / 20,747.76-28,631.78-11,795.26

Finding the Fourth Proportional to 20,747.76, 28,631.78 and 11,795.26

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Solution

The fourth proportional to 20,747.76, 28,631.78 and 11,795.26 is: 16,277.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.76 : 28,631.78 = 11,795.26 : x
  2. Step 2: Convert to fraction form
    20,747.76/28,631.78 = 11,795.26/x
  3. Step 3: Cross multiply
    20,747.76x = 28,631.78 × 11,795.26
  4. Step 4: Simplify right side
    20,747.76x = 337,719,289.36
  5. Step 5: Solve for x
    x = 337,719,289.36/20,747.76
  6. Step 6: Final answer
    x = 16,277.39

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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.