Home / 12,943.78-19,410.88-4,621.56

Finding the Fourth Proportional to 12,943.78, 19,410.88 and 4,621.56

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Solution

The fourth proportional to 12,943.78, 19,410.88 and 4,621.56 is: 6,930.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.78 : 19,410.88 = 4,621.56 : x
  2. Step 2: Convert to fraction form
    12,943.78/19,410.88 = 4,621.56/x
  3. Step 3: Cross multiply
    12,943.78x = 19,410.88 × 4,621.56
  4. Step 4: Simplify right side
    12,943.78x = 89,708,546.57
  5. Step 5: Solve for x
    x = 89,708,546.57/12,943.78
  6. Step 6: Final answer
    x = 6,930.63

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1.5x scale

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.