Home / 19,664-27,136.56-11,281.28

Finding the Fourth Proportional to 19,664, 27,136.56 and 11,281.28

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Solution

The fourth proportional to 19,664, 27,136.56 and 11,281.28 is: 15,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664 : 27,136.56 = 11,281.28 : x
  2. Step 2: Convert to fraction form
    19,664/27,136.56 = 11,281.28/x
  3. Step 3: Cross multiply
    19,664x = 27,136.56 × 11,281.28
  4. Step 4: Simplify right side
    19,664x = 306,135,131.60
  5. Step 5: Solve for x
    x = 306,135,131.60/19,664
  6. Step 6: Final answer
    x = 15,568.30

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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.