Home / 20,088.81-27,722.43-11,136.31

Finding the Fourth Proportional to 20,088.81, 27,722.43 and 11,136.31

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Solution

The fourth proportional to 20,088.81, 27,722.43 and 11,136.31 is: 15,368.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.81 : 27,722.43 = 11,136.31 : x
  2. Step 2: Convert to fraction form
    20,088.81/27,722.43 = 11,136.31/x
  3. Step 3: Cross multiply
    20,088.81x = 27,722.43 × 11,136.31
  4. Step 4: Simplify right side
    20,088.81x = 308,725,551.78
  5. Step 5: Solve for x
    x = 308,725,551.78/20,088.81
  6. Step 6: Final answer
    x = 15,368.04

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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.