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Finding the Fourth Proportional to 12,607.77, 18,902.90 and 5,583.96

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Solution

The fourth proportional to 12,607.77, 18,902.90 and 5,583.96 is: 8,372.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.77 : 18,902.90 = 5,583.96 : x
  2. Step 2: Convert to fraction form
    12,607.77/18,902.90 = 5,583.96/x
  3. Step 3: Cross multiply
    12,607.77x = 18,902.90 × 5,583.96
  4. Step 4: Simplify right side
    12,607.77x = 105,553,051.44
  5. Step 5: Solve for x
    x = 105,553,051.44/12,607.77
  6. Step 6: Final answer
    x = 8,372.06

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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.