Home / 21,936.50-30,273.10-12,000.50

Finding the Fourth Proportional to 21,936.50, 30,273.10 and 12,000.50

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Solution

The fourth proportional to 21,936.50, 30,273.10 and 12,000.50 is: 16,561.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.50 : 30,273.10 = 12,000.50 : x
  2. Step 2: Convert to fraction form
    21,936.50/30,273.10 = 12,000.50/x
  3. Step 3: Cross multiply
    21,936.50x = 30,273.10 × 12,000.50
  4. Step 4: Simplify right side
    21,936.50x = 363,292,336.55
  5. Step 5: Solve for x
    x = 363,292,336.55/21,936.50
  6. Step 6: Final answer
    x = 16,561.09

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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.