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Finding the Fourth Proportional to 22,382.75, 30,888.20 and 12,446.75

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Solution

The fourth proportional to 22,382.75, 30,888.20 and 12,446.75 is: 17,176.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,382.75 : 30,888.20 = 12,446.75 : x
  2. Step 2: Convert to fraction form
    22,382.75/30,888.20 = 12,446.75/x
  3. Step 3: Cross multiply
    22,382.75x = 30,888.20 × 12,446.75
  4. Step 4: Simplify right side
    22,382.75x = 384,457,703.35
  5. Step 5: Solve for x
    x = 384,457,703.35/22,382.75
  6. Step 6: Final answer
    x = 17,176.52

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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.