Home / 20,088.81-27,723.88-11,136.69

Finding the Fourth Proportional to 20,088.81, 27,723.88 and 11,136.69

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Solution

The fourth proportional to 20,088.81, 27,723.88 and 11,136.69 is: 15,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.81 : 27,723.88 = 11,136.69 : x
  2. Step 2: Convert to fraction form
    20,088.81/27,723.88 = 11,136.69/x
  3. Step 3: Cross multiply
    20,088.81x = 27,723.88 × 11,136.69
  4. Step 4: Simplify right side
    20,088.81x = 308,752,257.16
  5. Step 5: Solve for x
    x = 308,752,257.16/20,088.81
  6. Step 6: Final answer
    x = 15,369.37

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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.