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Finding the Fourth Proportional to 12,000.40, 18,000.59 and 3,236.20

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Solution

The fourth proportional to 12,000.40, 18,000.59 and 3,236.20 is: 4,854.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.40 : 18,000.59 = 3,236.20 : x
  2. Step 2: Convert to fraction form
    12,000.40/18,000.59 = 3,236.20/x
  3. Step 3: Cross multiply
    12,000.40x = 18,000.59 × 3,236.20
  4. Step 4: Simplify right side
    12,000.40x = 58,253,509.36
  5. Step 5: Solve for x
    x = 58,253,509.36/12,000.40
  6. Step 6: Final answer
    x = 4,854.30

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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.