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Finding the Fourth Proportional to 18,703.56, 25,811.22 and 10,205.70

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Solution

The fourth proportional to 18,703.56, 25,811.22 and 10,205.70 is: 14,084.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.56 : 25,811.22 = 10,205.70 : x
  2. Step 2: Convert to fraction form
    18,703.56/25,811.22 = 10,205.70/x
  3. Step 3: Cross multiply
    18,703.56x = 25,811.22 × 10,205.70
  4. Step 4: Simplify right side
    18,703.56x = 263,421,567.95
  5. Step 5: Solve for x
    x = 263,421,567.95/18,703.56
  6. Step 6: Final answer
    x = 14,084.03

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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.