Home / 13,106.20-19,659.30-7,922.20

Finding the Fourth Proportional to 13,106.20, 19,659.30 and 7,922.20

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Solution

The fourth proportional to 13,106.20, 19,659.30 and 7,922.20 is: 11,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.20 : 19,659.30 = 7,922.20 : x
  2. Step 2: Convert to fraction form
    13,106.20/19,659.30 = 7,922.20/x
  3. Step 3: Cross multiply
    13,106.20x = 19,659.30 × 7,922.20
  4. Step 4: Simplify right side
    13,106.20x = 155,744,906.46
  5. Step 5: Solve for x
    x = 155,744,906.46/13,106.20
  6. Step 6: Final answer
    x = 11,883.30

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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.