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Finding the Fourth Proportional to 12,000.56, 18,006.01 and 6,447.40

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Solution

The fourth proportional to 12,000.56, 18,006.01 and 6,447.40 is: 9,673.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.56 : 18,006.01 = 6,447.40 : x
  2. Step 2: Convert to fraction form
    12,000.56/18,006.01 = 6,447.40/x
  3. Step 3: Cross multiply
    12,000.56x = 18,006.01 × 6,447.40
  4. Step 4: Simplify right side
    12,000.56x = 116,091,887.74
  5. Step 5: Solve for x
    x = 116,091,887.74/12,000.56
  6. Step 6: Final answer
    x = 9,673.88

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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.