Home / 21,900.60-30,222.84-11,829.06

Finding the Fourth Proportional to 21,900.60, 30,222.84 and 11,829.06

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Solution

The fourth proportional to 21,900.60, 30,222.84 and 11,829.06 is: 16,324.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,900.60 : 30,222.84 = 11,829.06 : x
  2. Step 2: Convert to fraction form
    21,900.60/30,222.84 = 11,829.06/x
  3. Step 3: Cross multiply
    21,900.60x = 30,222.84 × 11,829.06
  4. Step 4: Simplify right side
    21,900.60x = 357,507,787.73
  5. Step 5: Solve for x
    x = 357,507,787.73/21,900.60
  6. Step 6: Final answer
    x = 16,324.11

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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.