Home / 12,223,883.70-18,335,825.55-7,919,211.60

Finding the Fourth Proportional to 12,223,883.70, 18,335,825.55 and 7,919,211.60

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Solution

The fourth proportional to 12,223,883.70, 18,335,825.55 and 7,919,211.60 is: 11,878,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223,883.70 : 18,335,825.55 = 7,919,211.60 : x
  2. Step 2: Convert to fraction form
    12,223,883.70/18,335,825.55 = 7,919,211.60/x
  3. Step 3: Cross multiply
    12,223,883.70x = 18,335,825.55 × 7,919,211.60
  4. Step 4: Simplify right side
    12,223,883.70x = 145,205,282,391,136.38
  5. Step 5: Solve for x
    x = 145,205,282,391,136.38/12,223,883.70
  6. Step 6: Final answer
    x = 11,878,817.40

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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.