Home / 12,987,870.16-19,476,324.48-3,891,261.28

Finding the Fourth Proportional to 12,987,870.16, 19,476,324.48 and 3,891,261.28

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Solution

The fourth proportional to 12,987,870.16, 19,476,324.48 and 3,891,261.28 is: 5,835,249.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987,870.16 : 19,476,324.48 = 3,891,261.28 : x
  2. Step 2: Convert to fraction form
    12,987,870.16/19,476,324.48 = 3,891,261.28/x
  3. Step 3: Cross multiply
    12,987,870.16x = 19,476,324.48 × 3,891,261.28
  4. Step 4: Simplify right side
    12,987,870.16x = 75,787,467,325,740.12
  5. Step 5: Solve for x
    x = 75,787,467,325,740.12/12,987,870.16
  6. Step 6: Final answer
    x = 5,835,249.84

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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.