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Finding the Fourth Proportional to 14,777.38, 20,392.85 and 8,063.15

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Solution

The fourth proportional to 14,777.38, 20,392.85 and 8,063.15 is: 11,127.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,777.38 : 20,392.85 = 8,063.15 : x
  2. Step 2: Convert to fraction form
    14,777.38/20,392.85 = 8,063.15/x
  3. Step 3: Cross multiply
    14,777.38x = 20,392.85 × 8,063.15
  4. Step 4: Simplify right side
    14,777.38x = 164,430,679.62
  5. Step 5: Solve for x
    x = 164,430,679.62/14,777.38
  6. Step 6: Final answer
    x = 11,127.19

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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.