Home / 12,891,521.80-19,337,282.70-3,914,907.40

Finding the Fourth Proportional to 12,891,521.80, 19,337,282.70 and 3,914,907.40

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Solution

The fourth proportional to 12,891,521.80, 19,337,282.70 and 3,914,907.40 is: 5,872,361.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891,521.80 : 19,337,282.70 = 3,914,907.40 : x
  2. Step 2: Convert to fraction form
    12,891,521.80/19,337,282.70 = 3,914,907.40/x
  3. Step 3: Cross multiply
    12,891,521.80x = 19,337,282.70 × 3,914,907.40
  4. Step 4: Simplify right side
    12,891,521.80x = 75,703,671,138,121.97
  5. Step 5: Solve for x
    x = 75,703,671,138,121.97/12,891,521.80
  6. Step 6: Final answer
    x = 5,872,361.10

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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.