Home / 21,804,949.85-30,090,452.87-12,638,445.53

Finding the Fourth Proportional to 21,804,949.85, 30,090,452.87 and 12,638,445.53

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Solution

The fourth proportional to 21,804,949.85, 30,090,452.87 and 12,638,445.53 is: 17,440,835.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804,949.85 : 30,090,452.87 = 12,638,445.53 : x
  2. Step 2: Convert to fraction form
    21,804,949.85/30,090,452.87 = 12,638,445.53/x
  3. Step 3: Cross multiply
    21,804,949.85x = 30,090,452.87 × 12,638,445.53
  4. Step 4: Simplify right side
    21,804,949.85x = 380,296,549,451,671
  5. Step 5: Solve for x
    x = 380,296,549,451,671/21,804,949.85
  6. Step 6: Final answer
    x = 17,440,835.78

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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.