Home / 13,319.60-18,380.64-7,351.04

Finding the Fourth Proportional to 13,319.60, 18,380.64 and 7,351.04

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Solution

The fourth proportional to 13,319.60, 18,380.64 and 7,351.04 is: 10,144.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.60 : 18,380.64 = 7,351.04 : x
  2. Step 2: Convert to fraction form
    13,319.60/18,380.64 = 7,351.04/x
  3. Step 3: Cross multiply
    13,319.60x = 18,380.64 × 7,351.04
  4. Step 4: Simplify right side
    13,319.60x = 135,116,819.87
  5. Step 5: Solve for x
    x = 135,116,819.87/13,319.60
  6. Step 6: Final answer
    x = 10,144.21

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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.