Home / 20,200.68-30,269.66-13,603.56

Finding the Fourth Proportional to 20,200.68, 30,269.66 and 13,603.56

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Solution

The fourth proportional to 20,200.68, 30,269.66 and 13,603.56 is: 20,384.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.68 : 30,269.66 = 13,603.56 : x
  2. Step 2: Convert to fraction form
    20,200.68/30,269.66 = 13,603.56/x
  3. Step 3: Cross multiply
    20,200.68x = 30,269.66 × 13,603.56
  4. Step 4: Simplify right side
    20,200.68x = 411,775,135.99
  5. Step 5: Solve for x
    x = 411,775,135.99/20,200.68
  6. Step 6: Final answer
    x = 20,384.22

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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.