Home / 18,756,611.82-28,130,980.86-5,290,290.54

Finding the Fourth Proportional to 18,756,611.82, 28,130,980.86 and 5,290,290.54

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Solution

The fourth proportional to 18,756,611.82, 28,130,980.86 and 5,290,290.54 is: 7,934,325.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756,611.82 : 28,130,980.86 = 5,290,290.54 : x
  2. Step 2: Convert to fraction form
    18,756,611.82/28,130,980.86 = 5,290,290.54/x
  3. Step 3: Cross multiply
    18,756,611.82x = 28,130,980.86 × 5,290,290.54
  4. Step 4: Simplify right side
    18,756,611.82x = 148,821,061,924,579.06
  5. Step 5: Solve for x
    x = 148,821,061,924,579.06/18,756,611.82
  6. Step 6: Final answer
    x = 7,934,325.42

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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.