Home / 28,252,540.80-42,294,830.40-18,678,729.60

Finding the Fourth Proportional to 28,252,540.80, 42,294,830.40 and 18,678,729.60

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Solution

The fourth proportional to 28,252,540.80, 42,294,830.40 and 18,678,729.60 is: 27,962,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252,540.80 : 42,294,830.40 = 18,678,729.60 : x
  2. Step 2: Convert to fraction form
    28,252,540.80/42,294,830.40 = 18,678,729.60/x
  3. Step 3: Cross multiply
    28,252,540.80x = 42,294,830.40 × 18,678,729.60
  4. Step 4: Simplify right side
    28,252,540.80x = 790,013,700,519,459.88
  5. Step 5: Solve for x
    x = 790,013,700,519,459.88/28,252,540.80
  6. Step 6: Final answer
    x = 27,962,571.80

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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.