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Finding the Fourth Proportional to 12,137.99, 16,742.03 and 7,424.60

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Solution

The fourth proportional to 12,137.99, 16,742.03 and 7,424.60 is: 10,240.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.99 : 16,742.03 = 7,424.60 : x
  2. Step 2: Convert to fraction form
    12,137.99/16,742.03 = 7,424.60/x
  3. Step 3: Cross multiply
    12,137.99x = 16,742.03 × 7,424.60
  4. Step 4: Simplify right side
    12,137.99x = 124,302,755.10
  5. Step 5: Solve for x
    x = 124,302,755.10/12,137.99
  6. Step 6: Final answer
    x = 10,240.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.