Home / 21,914.97-30,243.20-13,301.25

Finding the Fourth Proportional to 21,914.97, 30,243.20 and 13,301.25

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Solution

The fourth proportional to 21,914.97, 30,243.20 and 13,301.25 is: 18,356.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,914.97 : 30,243.20 = 13,301.25 : x
  2. Step 2: Convert to fraction form
    21,914.97/30,243.20 = 13,301.25/x
  3. Step 3: Cross multiply
    21,914.97x = 30,243.20 × 13,301.25
  4. Step 4: Simplify right side
    21,914.97x = 402,272,297.49
  5. Step 5: Solve for x
    x = 402,272,297.49/21,914.97
  6. Step 6: Final answer
    x = 18,356.05

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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.