Home / 20,136.79-30,216.05-11,833.03

Finding the Fourth Proportional to 20,136.79, 30,216.05 and 11,833.03

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Solution

The fourth proportional to 20,136.79, 30,216.05 and 11,833.03 is: 17,755.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.79 : 30,216.05 = 11,833.03 : x
  2. Step 2: Convert to fraction form
    20,136.79/30,216.05 = 11,833.03/x
  3. Step 3: Cross multiply
    20,136.79x = 30,216.05 × 11,833.03
  4. Step 4: Simplify right side
    20,136.79x = 357,547,215.89
  5. Step 5: Solve for x
    x = 357,547,215.89/20,136.79
  6. Step 6: Final answer
    x = 17,755.92

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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.