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Finding the Fourth Proportional to 15,081.84, 20,812.94 and 8,367.54

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Solution

The fourth proportional to 15,081.84, 20,812.94 and 8,367.54 is: 11,547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.84 : 20,812.94 = 8,367.54 : x
  2. Step 2: Convert to fraction form
    15,081.84/20,812.94 = 8,367.54/x
  3. Step 3: Cross multiply
    15,081.84x = 20,812.94 × 8,367.54
  4. Step 4: Simplify right side
    15,081.84x = 174,153,107.97
  5. Step 5: Solve for x
    x = 174,153,107.97/15,081.84
  6. Step 6: Final answer
    x = 11,547.21

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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.