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Finding the Fourth Proportional to 18,944.74, 28,380.74 and 10,599.46

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Solution

The fourth proportional to 18,944.74, 28,380.74 and 10,599.46 is: 15,878.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,944.74 : 28,380.74 = 10,599.46 : x
  2. Step 2: Convert to fraction form
    18,944.74/28,380.74 = 10,599.46/x
  3. Step 3: Cross multiply
    18,944.74x = 28,380.74 × 10,599.46
  4. Step 4: Simplify right side
    18,944.74x = 300,820,518.40
  5. Step 5: Solve for x
    x = 300,820,518.40/18,944.74
  6. Step 6: Final answer
    x = 15,878.84

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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.