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Finding the Fourth Proportional to 8,704.21, 13,038.88 and 4,017.88

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Solution

The fourth proportional to 8,704.21, 13,038.88 and 4,017.88 is: 6,018.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,704.21 : 13,038.88 = 4,017.88 : x
  2. Step 2: Convert to fraction form
    8,704.21/13,038.88 = 4,017.88/x
  3. Step 3: Cross multiply
    8,704.21x = 13,038.88 × 4,017.88
  4. Step 4: Simplify right side
    8,704.21x = 52,388,655.17
  5. Step 5: Solve for x
    x = 52,388,655.17/8,704.21
  6. Step 6: Final answer
    x = 6,018.77

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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.