Home / 13,320.90-19,974.96-7,775.88

Finding the Fourth Proportional to 13,320.90, 19,974.96 and 7,775.88

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Solution

The fourth proportional to 13,320.90, 19,974.96 and 7,775.88 is: 11,660.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.90 : 19,974.96 = 7,775.88 : x
  2. Step 2: Convert to fraction form
    13,320.90/19,974.96 = 7,775.88/x
  3. Step 3: Cross multiply
    13,320.90x = 19,974.96 × 7,775.88
  4. Step 4: Simplify right side
    13,320.90x = 155,322,891.96
  5. Step 5: Solve for x
    x = 155,322,891.96/13,320.90
  6. Step 6: Final answer
    x = 11,660.09

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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.