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Finding the Fourth Proportional to 12,495.83, 18,720.07 and 6,344.15

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Solution

The fourth proportional to 12,495.83, 18,720.07 and 6,344.15 is: 9,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,495.83 : 18,720.07 = 6,344.15 : x
  2. Step 2: Convert to fraction form
    12,495.83/18,720.07 = 6,344.15/x
  3. Step 3: Cross multiply
    12,495.83x = 18,720.07 × 6,344.15
  4. Step 4: Simplify right side
    12,495.83x = 118,762,900.37
  5. Step 5: Solve for x
    x = 118,762,900.37/12,495.83
  6. Step 6: Final answer
    x = 9,504.20

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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.