Home / 13,289.63-18,339.46-7,321.86

Finding the Fourth Proportional to 13,289.63, 18,339.46 and 7,321.86

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Solution

The fourth proportional to 13,289.63, 18,339.46 and 7,321.86 is: 10,104.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.63 : 18,339.46 = 7,321.86 : x
  2. Step 2: Convert to fraction form
    13,289.63/18,339.46 = 7,321.86/x
  3. Step 3: Cross multiply
    13,289.63x = 18,339.46 × 7,321.86
  4. Step 4: Simplify right side
    13,289.63x = 134,278,940.29
  5. Step 5: Solve for x
    x = 134,278,940.29/13,289.63
  6. Step 6: Final answer
    x = 10,104.04

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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.