Home / 18,786,113.76-28,179,429.84-5,322,928.80

Finding the Fourth Proportional to 18,786,113.76, 28,179,429.84 and 5,322,928.80

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Solution

The fourth proportional to 18,786,113.76, 28,179,429.84 and 5,322,928.80 is: 7,984,466.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786,113.76 : 28,179,429.84 = 5,322,928.80 : x
  2. Step 2: Convert to fraction form
    18,786,113.76/28,179,429.84 = 5,322,928.80/x
  3. Step 3: Cross multiply
    18,786,113.76x = 28,179,429.84 × 5,322,928.80
  4. Step 4: Simplify right side
    18,786,113.76x = 149,997,098,662,915.38
  5. Step 5: Solve for x
    x = 149,997,098,662,915.38/18,786,113.76
  6. Step 6: Final answer
    x = 7,984,466.64

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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.