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Finding the Fourth Proportional to 15,081.82, 20,812.96 and 8,367.58

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Solution

The fourth proportional to 15,081.82, 20,812.96 and 8,367.58 is: 11,547.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.82 : 20,812.96 = 8,367.58 : x
  2. Step 2: Convert to fraction form
    15,081.82/20,812.96 = 8,367.58/x
  3. Step 3: Cross multiply
    15,081.82x = 20,812.96 × 8,367.58
  4. Step 4: Simplify right side
    15,081.82x = 174,154,107.84
  5. Step 5: Solve for x
    x = 174,154,107.84/15,081.82
  6. Step 6: Final answer
    x = 11,547.29

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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.