Home / 13,309.22-18,366.04-7,640.03

Finding the Fourth Proportional to 13,309.22, 18,366.04 and 7,640.03

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Solution

The fourth proportional to 13,309.22, 18,366.04 and 7,640.03 is: 10,542.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.22 : 18,366.04 = 7,640.03 : x
  2. Step 2: Convert to fraction form
    13,309.22/18,366.04 = 7,640.03/x
  3. Step 3: Cross multiply
    13,309.22x = 18,366.04 × 7,640.03
  4. Step 4: Simplify right side
    13,309.22x = 140,317,096.58
  5. Step 5: Solve for x
    x = 140,317,096.58/13,309.22
  6. Step 6: Final answer
    x = 10,542.85

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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.