Home / 20,145.50-30,189.05-11,361.74

Finding the Fourth Proportional to 20,145.50, 30,189.05 and 11,361.74

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Solution

The fourth proportional to 20,145.50, 30,189.05 and 11,361.74 is: 17,026.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.50 : 30,189.05 = 11,361.74 : x
  2. Step 2: Convert to fraction form
    20,145.50/30,189.05 = 11,361.74/x
  3. Step 3: Cross multiply
    20,145.50x = 30,189.05 × 11,361.74
  4. Step 4: Simplify right side
    20,145.50x = 343,000,136.95
  5. Step 5: Solve for x
    x = 343,000,136.95/20,145.50
  6. Step 6: Final answer
    x = 17,026.14

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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.