Home / 28,990,648.83-40,007,121.12-15,938,129.82

Finding the Fourth Proportional to 28,990,648.83, 40,007,121.12 and 15,938,129.82

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Solution

The fourth proportional to 28,990,648.83, 40,007,121.12 and 15,938,129.82 is: 21,994,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990,648.83 : 40,007,121.12 = 15,938,129.82 : x
  2. Step 2: Convert to fraction form
    28,990,648.83/40,007,121.12 = 15,938,129.82/x
  3. Step 3: Cross multiply
    28,990,648.83x = 40,007,121.12 × 15,938,129.82
  4. Step 4: Simplify right side
    28,990,648.83x = 637,638,690,135,023.75
  5. Step 5: Solve for x
    x = 637,638,690,135,023.75/28,990,648.83
  6. Step 6: Final answer
    x = 21,994,633.30

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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.