Home / 20,747.64-28,631.61-11,795.15

Finding the Fourth Proportional to 20,747.64, 28,631.61 and 11,795.15

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Solution

The fourth proportional to 20,747.64, 28,631.61 and 11,795.15 is: 16,277.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.64 : 28,631.61 = 11,795.15 : x
  2. Step 2: Convert to fraction form
    20,747.64/28,631.61 = 11,795.15/x
  3. Step 3: Cross multiply
    20,747.64x = 28,631.61 × 11,795.15
  4. Step 4: Simplify right side
    20,747.64x = 337,713,991.53
  5. Step 5: Solve for x
    x = 337,713,991.53/20,747.64
  6. Step 6: Final answer
    x = 16,277.22

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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.