Home / 20,212,215.60-30,318,323.40-7,431,059.55

Finding the Fourth Proportional to 20,212,215.60, 30,318,323.40 and 7,431,059.55

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Solution

The fourth proportional to 20,212,215.60, 30,318,323.40 and 7,431,059.55 is: 11,146,589.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212,215.60 : 30,318,323.40 = 7,431,059.55 : x
  2. Step 2: Convert to fraction form
    20,212,215.60/30,318,323.40 = 7,431,059.55/x
  3. Step 3: Cross multiply
    20,212,215.60x = 30,318,323.40 × 7,431,059.55
  4. Step 4: Simplify right side
    20,212,215.60x = 225,297,266,641,558.47
  5. Step 5: Solve for x
    x = 225,297,266,641,558.47/20,212,215.60
  6. Step 6: Final answer
    x = 11,146,589.33

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Double scale
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Similar ratio
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1.5x scale

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.