Home / 21,933.21-30,240.40-18,304.48

Finding the Fourth Proportional to 21,933.21, 30,240.40 and 18,304.48

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Solution

The fourth proportional to 21,933.21, 30,240.40 and 18,304.48 is: 25,237.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.21 : 30,240.40 = 18,304.48 : x
  2. Step 2: Convert to fraction form
    21,933.21/30,240.40 = 18,304.48/x
  3. Step 3: Cross multiply
    21,933.21x = 30,240.40 × 18,304.48
  4. Step 4: Simplify right side
    21,933.21x = 553,534,796.99
  5. Step 5: Solve for x
    x = 553,534,796.99/21,933.21
  6. Step 6: Final answer
    x = 25,237.29

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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.