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Finding the Fourth Proportional to 12,000.54, 18,000.84 and 4,207.52

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Solution

The fourth proportional to 12,000.54, 18,000.84 and 4,207.52 is: 6,311.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.54 : 18,000.84 = 4,207.52 : x
  2. Step 2: Convert to fraction form
    12,000.54/18,000.84 = 4,207.52/x
  3. Step 3: Cross multiply
    12,000.54x = 18,000.84 × 4,207.52
  4. Step 4: Simplify right side
    12,000.54x = 75,738,894.32
  5. Step 5: Solve for x
    x = 75,738,894.32/12,000.54
  6. Step 6: Final answer
    x = 6,311.29

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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.