Home / 12,430.28-18,639.84-3,662.12

Finding the Fourth Proportional to 12,430.28, 18,639.84 and 3,662.12

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Solution

The fourth proportional to 12,430.28, 18,639.84 and 3,662.12 is: 5,491.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.28 : 18,639.84 = 3,662.12 : x
  2. Step 2: Convert to fraction form
    12,430.28/18,639.84 = 3,662.12/x
  3. Step 3: Cross multiply
    12,430.28x = 18,639.84 × 3,662.12
  4. Step 4: Simplify right side
    12,430.28x = 68,261,330.86
  5. Step 5: Solve for x
    x = 68,261,330.86/12,430.28
  6. Step 6: Final answer
    x = 5,491.54

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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.