Home / 28,943,888.70-39,942,645-15,891,993

Finding the Fourth Proportional to 28,943,888.70, 39,942,645 and 15,891,993

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Solution

The fourth proportional to 28,943,888.70, 39,942,645 and 15,891,993 is: 21,930,993.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943,888.70 : 39,942,645 = 15,891,993 : x
  2. Step 2: Convert to fraction form
    28,943,888.70/39,942,645 = 15,891,993/x
  3. Step 3: Cross multiply
    28,943,888.70x = 39,942,645 × 15,891,993
  4. Step 4: Simplify right side
    28,943,888.70x = 634,768,234,741,485
  5. Step 5: Solve for x
    x = 634,768,234,741,485/28,943,888.70
  6. Step 6: Final answer
    x = 21,930,993.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.