Home / 12,645,431.90-18,968,177.01-7,289,089.82

Finding the Fourth Proportional to 12,645,431.90, 18,968,177.01 and 7,289,089.82

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Solution

The fourth proportional to 12,645,431.90, 18,968,177.01 and 7,289,089.82 is: 10,933,651.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645,431.90 : 18,968,177.01 = 7,289,089.82 : x
  2. Step 2: Convert to fraction form
    12,645,431.90/18,968,177.01 = 7,289,089.82/x
  3. Step 3: Cross multiply
    12,645,431.90x = 18,968,177.01 × 7,289,089.82
  4. Step 4: Simplify right side
    12,645,431.90x = 138,260,745,947,549.06
  5. Step 5: Solve for x
    x = 138,260,745,947,549.06/12,645,431.90
  6. Step 6: Final answer
    x = 10,933,651.54

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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.