Home / 12,918.38-19,374.03-3,556.20

Finding the Fourth Proportional to 12,918.38, 19,374.03 and 3,556.20

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Solution

The fourth proportional to 12,918.38, 19,374.03 and 3,556.20 is: 5,333.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.38 : 19,374.03 = 3,556.20 : x
  2. Step 2: Convert to fraction form
    12,918.38/19,374.03 = 3,556.20/x
  3. Step 3: Cross multiply
    12,918.38x = 19,374.03 × 3,556.20
  4. Step 4: Simplify right side
    12,918.38x = 68,897,907.71
  5. Step 5: Solve for x
    x = 68,897,907.71/12,918.38
  6. Step 6: Final answer
    x = 5,333.32

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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.