Home / 18,684,990.90-28,027,486.35-13,902,021.90

Finding the Fourth Proportional to 18,684,990.90, 28,027,486.35 and 13,902,021.90

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Solution

The fourth proportional to 18,684,990.90, 28,027,486.35 and 13,902,021.90 is: 20,853,032.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,990.90 : 28,027,486.35 = 13,902,021.90 : x
  2. Step 2: Convert to fraction form
    18,684,990.90/28,027,486.35 = 13,902,021.90/x
  3. Step 3: Cross multiply
    18,684,990.90x = 28,027,486.35 × 13,902,021.90
  4. Step 4: Simplify right side
    18,684,990.90x = 389,638,729,039,651.12
  5. Step 5: Solve for x
    x = 389,638,729,039,651.12/18,684,990.90
  6. Step 6: Final answer
    x = 20,853,032.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.