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Finding the Fourth Proportional to 28,183.60, 42,246.60 and 16,490.80

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Solution

The fourth proportional to 28,183.60, 42,246.60 and 16,490.80 is: 24,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,183.60 : 42,246.60 = 16,490.80 : x
  2. Step 2: Convert to fraction form
    28,183.60/42,246.60 = 16,490.80/x
  3. Step 3: Cross multiply
    28,183.60x = 42,246.60 × 16,490.80
  4. Step 4: Simplify right side
    28,183.60x = 696,680,231.28
  5. Step 5: Solve for x
    x = 696,680,231.28/28,183.60
  6. Step 6: Final answer
    x = 24,719.35

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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.