Home / 20,410.48-28,172.58-11,914.90

Finding the Fourth Proportional to 20,410.48, 28,172.58 and 11,914.90

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Solution

The fourth proportional to 20,410.48, 28,172.58 and 11,914.90 is: 16,446.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.48 : 28,172.58 = 11,914.90 : x
  2. Step 2: Convert to fraction form
    20,410.48/28,172.58 = 11,914.90/x
  3. Step 3: Cross multiply
    20,410.48x = 28,172.58 × 11,914.90
  4. Step 4: Simplify right side
    20,410.48x = 335,673,473.44
  5. Step 5: Solve for x
    x = 335,673,473.44/20,410.48
  6. Step 6: Final answer
    x = 16,446.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.