Home / 28,943,312.11-39,942,893.96-15,891,121.15

Finding the Fourth Proportional to 28,943,312.11, 39,942,893.96 and 15,891,121.15

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Solution

The fourth proportional to 28,943,312.11, 39,942,893.96 and 15,891,121.15 is: 21,930,363.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943,312.11 : 39,942,893.96 = 15,891,121.15 : x
  2. Step 2: Convert to fraction form
    28,943,312.11/39,942,893.96 = 15,891,121.15/x
  3. Step 3: Cross multiply
    28,943,312.11x = 39,942,893.96 × 15,891,121.15
  4. Step 4: Simplify right side
    28,943,312.11x = 634,737,366,999,963.25
  5. Step 5: Solve for x
    x = 634,737,366,999,963.25/28,943,312.11
  6. Step 6: Final answer
    x = 21,930,363.90

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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.