Home / 28,943,321.61-39,942,907.07-15,891,130.65

Finding the Fourth Proportional to 28,943,321.61, 39,942,907.07 and 15,891,130.65

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Solution

The fourth proportional to 28,943,321.61, 39,942,907.07 and 15,891,130.65 is: 21,930,377.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943,321.61 : 39,942,907.07 = 15,891,130.65 : x
  2. Step 2: Convert to fraction form
    28,943,321.61/39,942,907.07 = 15,891,130.65/x
  3. Step 3: Cross multiply
    28,943,321.61x = 39,942,907.07 × 15,891,130.65
  4. Step 4: Simplify right side
    28,943,321.61x = 634,737,954,710,723
  5. Step 5: Solve for x
    x = 634,737,954,710,723/28,943,321.61
  6. Step 6: Final answer
    x = 21,930,377.01

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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.