Home / 12,978,641.52-19,470,061.80-5,406,372.72

Finding the Fourth Proportional to 12,978,641.52, 19,470,061.80 and 5,406,372.72

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Solution

The fourth proportional to 12,978,641.52, 19,470,061.80 and 5,406,372.72 is: 8,110,433.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,978,641.52 : 19,470,061.80 = 5,406,372.72 : x
  2. Step 2: Convert to fraction form
    12,978,641.52/19,470,061.80 = 5,406,372.72/x
  3. Step 3: Cross multiply
    12,978,641.52x = 19,470,061.80 × 5,406,372.72
  4. Step 4: Simplify right side
    12,978,641.52x = 105,262,410,972,234.09
  5. Step 5: Solve for x
    x = 105,262,410,972,234.09/12,978,641.52
  6. Step 6: Final answer
    x = 8,110,433.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.