Home / 20,021.53-27,631.72-11,069.71

Finding the Fourth Proportional to 20,021.53, 27,631.72 and 11,069.71

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Solution

The fourth proportional to 20,021.53, 27,631.72 and 11,069.71 is: 15,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.53 : 27,631.72 = 11,069.71 : x
  2. Step 2: Convert to fraction form
    20,021.53/27,631.72 = 11,069.71/x
  3. Step 3: Cross multiply
    20,021.53x = 27,631.72 × 11,069.71
  4. Step 4: Simplify right side
    20,021.53x = 305,875,154.88
  5. Step 5: Solve for x
    x = 305,875,154.88/20,021.53
  6. Step 6: Final answer
    x = 15,277.31

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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.