Home / 12,918.51-19,375.55-3,556.45

Finding the Fourth Proportional to 12,918.51, 19,375.55 and 3,556.45

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Solution

The fourth proportional to 12,918.51, 19,375.55 and 3,556.45 is: 5,334.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.51 : 19,375.55 = 3,556.45 : x
  2. Step 2: Convert to fraction form
    12,918.51/19,375.55 = 3,556.45/x
  3. Step 3: Cross multiply
    12,918.51x = 19,375.55 × 3,556.45
  4. Step 4: Simplify right side
    12,918.51x = 68,908,108.58
  5. Step 5: Solve for x
    x = 68,908,108.58/12,918.51
  6. Step 6: Final answer
    x = 5,334.06

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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.