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Finding the Fourth Proportional to 28,297.59, 42,447.80 and 10,768.78

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Solution

The fourth proportional to 28,297.59, 42,447.80 and 10,768.78 is: 16,153.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,297.59 : 42,447.80 = 10,768.78 : x
  2. Step 2: Convert to fraction form
    28,297.59/42,447.80 = 10,768.78/x
  3. Step 3: Cross multiply
    28,297.59x = 42,447.80 × 10,768.78
  4. Step 4: Simplify right side
    28,297.59x = 457,111,019.68
  5. Step 5: Solve for x
    x = 457,111,019.68/28,297.59
  6. Step 6: Final answer
    x = 16,153.71

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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.