Home / 21,900.21-30,194.61-14,334.54

Finding the Fourth Proportional to 21,900.21, 30,194.61 and 14,334.54

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Solution

The fourth proportional to 21,900.21, 30,194.61 and 14,334.54 is: 19,763.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,900.21 : 30,194.61 = 14,334.54 : x
  2. Step 2: Convert to fraction form
    21,900.21/30,194.61 = 14,334.54/x
  3. Step 3: Cross multiply
    21,900.21x = 30,194.61 × 14,334.54
  4. Step 4: Simplify right side
    21,900.21x = 432,825,844.83
  5. Step 5: Solve for x
    x = 432,825,844.83/21,900.21
  6. Step 6: Final answer
    x = 19,763.55

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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.