Home / 18,947,846-26,147,982.12-10,687,880.72

Finding the Fourth Proportional to 18,947,846, 26,147,982.12 and 10,687,880.72

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Solution

The fourth proportional to 18,947,846, 26,147,982.12 and 10,687,880.72 is: 14,749,249.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947,846 : 26,147,982.12 = 10,687,880.72 : x
  2. Step 2: Convert to fraction form
    18,947,846/26,147,982.12 = 10,687,880.72/x
  3. Step 3: Cross multiply
    18,947,846x = 26,147,982.12 × 10,687,880.72
  4. Step 4: Simplify right side
    18,947,846x = 279,466,513,967,252.75
  5. Step 5: Solve for x
    x = 279,466,513,967,252.75/18,947,846
  6. Step 6: Final answer
    x = 14,749,249.81

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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.