Home / 20,088.88-27,719.73-11,136.38

Finding the Fourth Proportional to 20,088.88, 27,719.73 and 11,136.38

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Solution

The fourth proportional to 20,088.88, 27,719.73 and 11,136.38 is: 15,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.88 : 27,719.73 = 11,136.38 : x
  2. Step 2: Convert to fraction form
    20,088.88/27,719.73 = 11,136.38/x
  3. Step 3: Cross multiply
    20,088.88x = 27,719.73 × 11,136.38
  4. Step 4: Simplify right side
    20,088.88x = 308,697,446.78
  5. Step 5: Solve for x
    x = 308,697,446.78/20,088.88
  6. Step 6: Final answer
    x = 15,366.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.