Home / 12,289,954.56-16,954,145.28-7,942,790.40

Finding the Fourth Proportional to 12,289,954.56, 16,954,145.28 and 7,942,790.40

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Solution

The fourth proportional to 12,289,954.56, 16,954,145.28 and 7,942,790.40 is: 10,957,178.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289,954.56 : 16,954,145.28 = 7,942,790.40 : x
  2. Step 2: Convert to fraction form
    12,289,954.56/16,954,145.28 = 7,942,790.40/x
  3. Step 3: Cross multiply
    12,289,954.56x = 16,954,145.28 × 7,942,790.40
  4. Step 4: Simplify right side
    12,289,954.56x = 134,663,222,370,189.33
  5. Step 5: Solve for x
    x = 134,663,222,370,189.33/12,289,954.56
  6. Step 6: Final answer
    x = 10,957,178.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.