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Finding the Fourth Proportional to 14,778.10, 20,393.87 and 8,063.74

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Solution

The fourth proportional to 14,778.10, 20,393.87 and 8,063.74 is: 11,128.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.10 : 20,393.87 = 8,063.74 : x
  2. Step 2: Convert to fraction form
    14,778.10/20,393.87 = 8,063.74/x
  3. Step 3: Cross multiply
    14,778.10x = 20,393.87 × 8,063.74
  4. Step 4: Simplify right side
    14,778.10x = 164,450,865.27
  5. Step 5: Solve for x
    x = 164,450,865.27/14,778.10
  6. Step 6: Final answer
    x = 11,128.01

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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.