Home / 21,768.60-30,039.66-11,832.60

Finding the Fourth Proportional to 21,768.60, 30,039.66 and 11,832.60

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Solution

The fourth proportional to 21,768.60, 30,039.66 and 11,832.60 is: 16,328.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.60 : 30,039.66 = 11,832.60 : x
  2. Step 2: Convert to fraction form
    21,768.60/30,039.66 = 11,832.60/x
  3. Step 3: Cross multiply
    21,768.60x = 30,039.66 × 11,832.60
  4. Step 4: Simplify right side
    21,768.60x = 355,447,280.92
  5. Step 5: Solve for x
    x = 355,447,280.92/21,768.60
  6. Step 6: Final answer
    x = 16,328.44

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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.