Home / 19,724.80-27,210-13,351.60

Finding the Fourth Proportional to 19,724.80, 27,210 and 13,351.60

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Solution

The fourth proportional to 19,724.80, 27,210 and 13,351.60 is: 18,418.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,724.80 : 27,210 = 13,351.60 : x
  2. Step 2: Convert to fraction form
    19,724.80/27,210 = 13,351.60/x
  3. Step 3: Cross multiply
    19,724.80x = 27,210 × 13,351.60
  4. Step 4: Simplify right side
    19,724.80x = 363,297,036
  5. Step 5: Solve for x
    x = 363,297,036/19,724.80
  6. Step 6: Final answer
    x = 18,418.29

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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.