Home / 12,487,992.40-18,731,988.60-7,365,163.60

Finding the Fourth Proportional to 12,487,992.40, 18,731,988.60 and 7,365,163.60

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Solution

The fourth proportional to 12,487,992.40, 18,731,988.60 and 7,365,163.60 is: 11,047,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487,992.40 : 18,731,988.60 = 7,365,163.60 : x
  2. Step 2: Convert to fraction form
    12,487,992.40/18,731,988.60 = 7,365,163.60/x
  3. Step 3: Cross multiply
    12,487,992.40x = 18,731,988.60 × 7,365,163.60
  4. Step 4: Simplify right side
    12,487,992.40x = 137,964,160,592,334.97
  5. Step 5: Solve for x
    x = 137,964,160,592,334.97/12,487,992.40
  6. Step 6: Final answer
    x = 11,047,745.40

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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.