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Finding the Fourth Proportional to 12,360.53, 18,540.64 and 3,000.63

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Solution

The fourth proportional to 12,360.53, 18,540.64 and 3,000.63 is: 4,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,360.53 : 18,540.64 = 3,000.63 : x
  2. Step 2: Convert to fraction form
    12,360.53/18,540.64 = 3,000.63/x
  3. Step 3: Cross multiply
    12,360.53x = 18,540.64 × 3,000.63
  4. Step 4: Simplify right side
    12,360.53x = 55,633,507.90
  5. Step 5: Solve for x
    x = 55,633,507.90/12,360.53
  6. Step 6: Final answer
    x = 4,500.90

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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.