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Finding the Fourth Proportional to 21,800.55, 30,093.90 and 14,736.54

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Solution

The fourth proportional to 21,800.55, 30,093.90 and 14,736.54 is: 20,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,800.55 : 30,093.90 = 14,736.54 : x
  2. Step 2: Convert to fraction form
    21,800.55/30,093.90 = 14,736.54/x
  3. Step 3: Cross multiply
    21,800.55x = 30,093.90 × 14,736.54
  4. Step 4: Simplify right side
    21,800.55x = 443,479,961.11
  5. Step 5: Solve for x
    x = 443,479,961.11/21,800.55
  6. Step 6: Final answer
    x = 20,342.60

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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.