Home / 12,660.62-18,970.79-8,485.25

Finding the Fourth Proportional to 12,660.62, 18,970.79 and 8,485.25

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Solution

The fourth proportional to 12,660.62, 18,970.79 and 8,485.25 is: 12,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.62 : 18,970.79 = 8,485.25 : x
  2. Step 2: Convert to fraction form
    12,660.62/18,970.79 = 8,485.25/x
  3. Step 3: Cross multiply
    12,660.62x = 18,970.79 × 8,485.25
  4. Step 4: Simplify right side
    12,660.62x = 160,971,758.57
  5. Step 5: Solve for x
    x = 160,971,758.57/12,660.62
  6. Step 6: Final answer
    x = 12,714.37

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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.