Home / 12,428.37-18,616.23-9,313.11

Finding the Fourth Proportional to 12,428.37, 18,616.23 and 9,313.11

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Solution

The fourth proportional to 12,428.37, 18,616.23 and 9,313.11 is: 13,949.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.37 : 18,616.23 = 9,313.11 : x
  2. Step 2: Convert to fraction form
    12,428.37/18,616.23 = 9,313.11/x
  3. Step 3: Cross multiply
    12,428.37x = 18,616.23 × 9,313.11
  4. Step 4: Simplify right side
    12,428.37x = 173,374,997.78
  5. Step 5: Solve for x
    x = 173,374,997.78/12,428.37
  6. Step 6: Final answer
    x = 13,949.94

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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.