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Finding the Fourth Proportional to 19,245.68, 28,863.48 and 8,711.60

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Solution

The fourth proportional to 19,245.68, 28,863.48 and 8,711.60 is: 13,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,245.68 : 28,863.48 = 8,711.60 : x
  2. Step 2: Convert to fraction form
    19,245.68/28,863.48 = 8,711.60/x
  3. Step 3: Cross multiply
    19,245.68x = 28,863.48 × 8,711.60
  4. Step 4: Simplify right side
    19,245.68x = 251,447,092.37
  5. Step 5: Solve for x
    x = 251,447,092.37/19,245.68
  6. Step 6: Final answer
    x = 13,065.12

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1.5x scale

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.