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Finding the Fourth Proportional to 16,840.64, 25,253.28 and 8,079.68

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Solution

The fourth proportional to 16,840.64, 25,253.28 and 8,079.68 is: 12,115.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,840.64 : 25,253.28 = 8,079.68 : x
  2. Step 2: Convert to fraction form
    16,840.64/25,253.28 = 8,079.68/x
  3. Step 3: Cross multiply
    16,840.64x = 25,253.28 × 8,079.68
  4. Step 4: Simplify right side
    16,840.64x = 204,038,421.35
  5. Step 5: Solve for x
    x = 204,038,421.35/16,840.64
  6. Step 6: Final answer
    x = 12,115.84

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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.