Home / 28,159,968-38,860,755.84-15,282,912

Finding the Fourth Proportional to 28,159,968, 38,860,755.84 and 15,282,912

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Solution

The fourth proportional to 28,159,968, 38,860,755.84 and 15,282,912 is: 21,090,418.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159,968 : 38,860,755.84 = 15,282,912 : x
  2. Step 2: Convert to fraction form
    28,159,968/38,860,755.84 = 15,282,912/x
  3. Step 3: Cross multiply
    28,159,968x = 38,860,755.84 × 15,282,912
  4. Step 4: Simplify right side
    28,159,968x = 593,905,511,756,206.12
  5. Step 5: Solve for x
    x = 593,905,511,756,206.12/28,159,968
  6. Step 6: Final answer
    x = 21,090,418.56

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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.