Home / 13,608,478-20,405,629.68-6,418,081.18

Finding the Fourth Proportional to 13,608,478, 20,405,629.68 and 6,418,081.18

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Solution

The fourth proportional to 13,608,478, 20,405,629.68 and 6,418,081.18 is: 9,623,779.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,478 : 20,405,629.68 = 6,418,081.18 : x
  2. Step 2: Convert to fraction form
    13,608,478/20,405,629.68 = 6,418,081.18/x
  3. Step 3: Cross multiply
    13,608,478x = 20,405,629.68 × 6,418,081.18
  4. Step 4: Simplify right side
    13,608,478x = 130,964,987,815,257.42
  5. Step 5: Solve for x
    x = 130,964,987,815,257.42/13,608,478
  6. Step 6: Final answer
    x = 9,623,779.22

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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.