Home / 18,721,879.35-28,082,819.03-15,698,570.55

Finding the Fourth Proportional to 18,721,879.35, 28,082,819.03 and 15,698,570.55

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Solution

The fourth proportional to 18,721,879.35, 28,082,819.03 and 15,698,570.55 is: 23,547,855.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,879.35 : 28,082,819.03 = 15,698,570.55 : x
  2. Step 2: Convert to fraction form
    18,721,879.35/28,082,819.03 = 15,698,570.55/x
  3. Step 3: Cross multiply
    18,721,879.35x = 28,082,819.03 × 15,698,570.55
  4. Step 4: Simplify right side
    18,721,879.35x = 440,860,115,785,337.62
  5. Step 5: Solve for x
    x = 440,860,115,785,337.62/18,721,879.35
  6. Step 6: Final answer
    x = 23,547,855.83

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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.