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Finding the Fourth Proportional to 22,086.56, 30,480 and 12,015.56

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Solution

The fourth proportional to 22,086.56, 30,480 and 12,015.56 is: 16,581.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,086.56 : 30,480 = 12,015.56 : x
  2. Step 2: Convert to fraction form
    22,086.56/30,480 = 12,015.56/x
  3. Step 3: Cross multiply
    22,086.56x = 30,480 × 12,015.56
  4. Step 4: Simplify right side
    22,086.56x = 366,234,268.80
  5. Step 5: Solve for x
    x = 366,234,268.80/22,086.56
  6. Step 6: Final answer
    x = 16,581.77

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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.