Home / 21,912.85-32,921.79-14,030.78

Finding the Fourth Proportional to 21,912.85, 32,921.79 and 14,030.78

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Solution

The fourth proportional to 21,912.85, 32,921.79 and 14,030.78 is: 21,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.85 : 32,921.79 = 14,030.78 : x
  2. Step 2: Convert to fraction form
    21,912.85/32,921.79 = 14,030.78/x
  3. Step 3: Cross multiply
    21,912.85x = 32,921.79 × 14,030.78
  4. Step 4: Simplify right side
    21,912.85x = 461,918,392.70
  5. Step 5: Solve for x
    x = 461,918,392.70/21,912.85
  6. Step 6: Final answer
    x = 21,079.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.