Home / 12,617.35-18,928.32-5,217.79

Finding the Fourth Proportional to 12,617.35, 18,928.32 and 5,217.79

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Solution

The fourth proportional to 12,617.35, 18,928.32 and 5,217.79 is: 7,827.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.35 : 18,928.32 = 5,217.79 : x
  2. Step 2: Convert to fraction form
    12,617.35/18,928.32 = 5,217.79/x
  3. Step 3: Cross multiply
    12,617.35x = 18,928.32 × 5,217.79
  4. Step 4: Simplify right side
    12,617.35x = 98,763,998.81
  5. Step 5: Solve for x
    x = 98,763,998.81/12,617.35
  6. Step 6: Final answer
    x = 7,827.63

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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.