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Finding the Fourth Proportional to 14,894.90, 20,555.19 and 8,181.14

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Solution

The fourth proportional to 14,894.90, 20,555.19 and 8,181.14 is: 11,290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,894.90 : 20,555.19 = 8,181.14 : x
  2. Step 2: Convert to fraction form
    14,894.90/20,555.19 = 8,181.14/x
  3. Step 3: Cross multiply
    14,894.90x = 20,555.19 × 8,181.14
  4. Step 4: Simplify right side
    14,894.90x = 168,164,938.50
  5. Step 5: Solve for x
    x = 168,164,938.50/14,894.90
  6. Step 6: Final answer
    x = 11,290.11

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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.