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Finding the Fourth Proportional to 20,347.99, 30,530.69 and 10,494.19

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Solution

The fourth proportional to 20,347.99, 30,530.69 and 10,494.19 is: 15,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.99 : 30,530.69 = 10,494.19 : x
  2. Step 2: Convert to fraction form
    20,347.99/30,530.69 = 10,494.19/x
  3. Step 3: Cross multiply
    20,347.99x = 30,530.69 × 10,494.19
  4. Step 4: Simplify right side
    20,347.99x = 320,394,709.04
  5. Step 5: Solve for x
    x = 320,394,709.04/20,347.99
  6. Step 6: Final answer
    x = 15,745.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.