Home / 19,500-26,914.80-11,121.36

Finding the Fourth Proportional to 19,500, 26,914.80 and 11,121.36

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Solution

The fourth proportional to 19,500, 26,914.80 and 11,121.36 is: 15,350.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,500 : 26,914.80 = 11,121.36 : x
  2. Step 2: Convert to fraction form
    19,500/26,914.80 = 11,121.36/x
  3. Step 3: Cross multiply
    19,500x = 26,914.80 × 11,121.36
  4. Step 4: Simplify right side
    19,500x = 299,329,180.13
  5. Step 5: Solve for x
    x = 299,329,180.13/19,500
  6. Step 6: Final answer
    x = 15,350.21

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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.