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Finding the Fourth Proportional to 18,205.72, 25,100.58 and 12,232.72

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Solution

The fourth proportional to 18,205.72, 25,100.58 and 12,232.72 is: 16,865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.72 : 25,100.58 = 12,232.72 : x
  2. Step 2: Convert to fraction form
    18,205.72/25,100.58 = 12,232.72/x
  3. Step 3: Cross multiply
    18,205.72x = 25,100.58 × 12,232.72
  4. Step 4: Simplify right side
    18,205.72x = 307,048,366.98
  5. Step 5: Solve for x
    x = 307,048,366.98/18,205.72
  6. Step 6: Final answer
    x = 16,865.49

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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.