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Finding the Fourth Proportional to 12,665.61, 18,998.74 and 6,000.55

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Solution

The fourth proportional to 12,665.61, 18,998.74 and 6,000.55 is: 9,000.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.61 : 18,998.74 = 6,000.55 : x
  2. Step 2: Convert to fraction form
    12,665.61/18,998.74 = 6,000.55/x
  3. Step 3: Cross multiply
    12,665.61x = 18,998.74 × 6,000.55
  4. Step 4: Simplify right side
    12,665.61x = 114,002,779.31
  5. Step 5: Solve for x
    x = 114,002,779.31/12,665.61
  6. Step 6: Final answer
    x = 9,000.97

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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.