Home / 20,136.29-30,215.30-11,832.53

Finding the Fourth Proportional to 20,136.29, 30,215.30 and 11,832.53

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Solution

The fourth proportional to 20,136.29, 30,215.30 and 11,832.53 is: 17,755.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.29 : 30,215.30 = 11,832.53 : x
  2. Step 2: Convert to fraction form
    20,136.29/30,215.30 = 11,832.53/x
  3. Step 3: Cross multiply
    20,136.29x = 30,215.30 × 11,832.53
  4. Step 4: Simplify right side
    20,136.29x = 357,523,233.47
  5. Step 5: Solve for x
    x = 357,523,233.47/20,136.29
  6. Step 6: Final answer
    x = 17,755.17

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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.