Home / 20,088.79-27,719.61-11,136.29

Finding the Fourth Proportional to 20,088.79, 27,719.61 and 11,136.29

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Solution

The fourth proportional to 20,088.79, 27,719.61 and 11,136.29 is: 15,366.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.79 : 27,719.61 = 11,136.29 : x
  2. Step 2: Convert to fraction form
    20,088.79/27,719.61 = 11,136.29/x
  3. Step 3: Cross multiply
    20,088.79x = 27,719.61 × 11,136.29
  4. Step 4: Simplify right side
    20,088.79x = 308,693,615.65
  5. Step 5: Solve for x
    x = 308,693,615.65/20,088.79
  6. Step 6: Final answer
    x = 15,366.46

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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.