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Finding the Fourth Proportional to 16,705.20, 25,009.20 and 16,219.20

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Solution

The fourth proportional to 16,705.20, 25,009.20 and 16,219.20 is: 24,281.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,705.20 : 25,009.20 = 16,219.20 : x
  2. Step 2: Convert to fraction form
    16,705.20/25,009.20 = 16,219.20/x
  3. Step 3: Cross multiply
    16,705.20x = 25,009.20 × 16,219.20
  4. Step 4: Simplify right side
    16,705.20x = 405,629,216.64
  5. Step 5: Solve for x
    x = 405,629,216.64/16,705.20
  6. Step 6: Final answer
    x = 24,281.61

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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.