Home / 18,733,939.20-28,082,246.40-8,618,918.40

Finding the Fourth Proportional to 18,733,939.20, 28,082,246.40 and 8,618,918.40

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Solution

The fourth proportional to 18,733,939.20, 28,082,246.40 and 8,618,918.40 is: 12,919,791.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,733,939.20 : 28,082,246.40 = 8,618,918.40 : x
  2. Step 2: Convert to fraction form
    18,733,939.20/28,082,246.40 = 8,618,918.40/x
  3. Step 3: Cross multiply
    18,733,939.20x = 28,082,246.40 × 8,618,918.40
  4. Step 4: Simplify right side
    18,733,939.20x = 242,038,590,210,293.75
  5. Step 5: Solve for x
    x = 242,038,590,210,293.75/18,733,939.20
  6. Step 6: Final answer
    x = 12,919,791.59

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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.