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Finding the Fourth Proportional to 18,898,982.86, 28,352,608.67 and 6,120,779.26

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Solution

The fourth proportional to 18,898,982.86, 28,352,608.67 and 6,120,779.26 is: 9,182,507.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898,982.86 : 28,352,608.67 = 6,120,779.26 : x
  2. Step 2: Convert to fraction form
    18,898,982.86/28,352,608.67 = 6,120,779.26/x
  3. Step 3: Cross multiply
    18,898,982.86x = 28,352,608.67 × 6,120,779.26
  4. Step 4: Simplify right side
    18,898,982.86x = 173,540,059,114,232.19
  5. Step 5: Solve for x
    x = 173,540,059,114,232.19/18,898,982.86
  6. Step 6: Final answer
    x = 9,182,507.88

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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.