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Finding the Fourth Proportional to 12,940.08, 19,413 and 7,093.68

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Solution

The fourth proportional to 12,940.08, 19,413 and 7,093.68 is: 10,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.08 : 19,413 = 7,093.68 : x
  2. Step 2: Convert to fraction form
    12,940.08/19,413 = 7,093.68/x
  3. Step 3: Cross multiply
    12,940.08x = 19,413 × 7,093.68
  4. Step 4: Simplify right side
    12,940.08x = 137,709,609.84
  5. Step 5: Solve for x
    x = 137,709,609.84/12,940.08
  6. Step 6: Final answer
    x = 10,642.10

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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.