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Finding the Fourth Proportional to 19,286.23, 28,932.96 and 8,756.99

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Solution

The fourth proportional to 19,286.23, 28,932.96 and 8,756.99 is: 13,137.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.23 : 28,932.96 = 8,756.99 : x
  2. Step 2: Convert to fraction form
    19,286.23/28,932.96 = 8,756.99/x
  3. Step 3: Cross multiply
    19,286.23x = 28,932.96 × 8,756.99
  4. Step 4: Simplify right side
    19,286.23x = 253,365,641.39
  5. Step 5: Solve for x
    x = 253,365,641.39/19,286.23
  6. Step 6: Final answer
    x = 13,137.13

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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.