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Finding the Fourth Proportional to 13,714.64, 20,568.87 and 6,311.99

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Solution

The fourth proportional to 13,714.64, 20,568.87 and 6,311.99 is: 9,466.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,714.64 : 20,568.87 = 6,311.99 : x
  2. Step 2: Convert to fraction form
    13,714.64/20,568.87 = 6,311.99/x
  3. Step 3: Cross multiply
    13,714.64x = 20,568.87 × 6,311.99
  4. Step 4: Simplify right side
    13,714.64x = 129,830,501.75
  5. Step 5: Solve for x
    x = 129,830,501.75/13,714.64
  6. Step 6: Final answer
    x = 9,466.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.