Home / 18,721,879.70-28,082,819.55-15,698,570.90

Finding the Fourth Proportional to 18,721,879.70, 28,082,819.55 and 15,698,570.90

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Solution

The fourth proportional to 18,721,879.70, 28,082,819.55 and 15,698,570.90 is: 23,547,856.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,879.70 : 28,082,819.55 = 15,698,570.90 : x
  2. Step 2: Convert to fraction form
    18,721,879.70/28,082,819.55 = 15,698,570.90/x
  3. Step 3: Cross multiply
    18,721,879.70x = 28,082,819.55 × 15,698,570.90
  4. Step 4: Simplify right side
    18,721,879.70x = 440,860,133,777,581.12
  5. Step 5: Solve for x
    x = 440,860,133,777,581.12/18,721,879.70
  6. Step 6: Final answer
    x = 23,547,856.35

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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.