Home / 13,289.40-18,336.06-8,568

Finding the Fourth Proportional to 13,289.40, 18,336.06 and 8,568

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Solution

The fourth proportional to 13,289.40, 18,336.06 and 8,568 is: 11,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.40 : 18,336.06 = 8,568 : x
  2. Step 2: Convert to fraction form
    13,289.40/18,336.06 = 8,568/x
  3. Step 3: Cross multiply
    13,289.40x = 18,336.06 × 8,568
  4. Step 4: Simplify right side
    13,289.40x = 157,103,362.08
  5. Step 5: Solve for x
    x = 157,103,362.08/13,289.40
  6. Step 6: Final answer
    x = 11,821.70

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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.