Home / 18,771,352.40-28,157,028.60-7,985,943.20

Finding the Fourth Proportional to 18,771,352.40, 28,157,028.60 and 7,985,943.20

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Solution

The fourth proportional to 18,771,352.40, 28,157,028.60 and 7,985,943.20 is: 11,978,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771,352.40 : 28,157,028.60 = 7,985,943.20 : x
  2. Step 2: Convert to fraction form
    18,771,352.40/28,157,028.60 = 7,985,943.20/x
  3. Step 3: Cross multiply
    18,771,352.40x = 28,157,028.60 × 7,985,943.20
  4. Step 4: Simplify right side
    18,771,352.40x = 224,860,431,080,375.53
  5. Step 5: Solve for x
    x = 224,860,431,080,375.53/18,771,352.40
  6. Step 6: Final answer
    x = 11,978,914.80

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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.