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Finding the Fourth Proportional to 12,276, 16,940.99 and 6,970.92

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Solution

The fourth proportional to 12,276, 16,940.99 and 6,970.92 is: 9,619.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276 : 16,940.99 = 6,970.92 : x
  2. Step 2: Convert to fraction form
    12,276/16,940.99 = 6,970.92/x
  3. Step 3: Cross multiply
    12,276x = 16,940.99 × 6,970.92
  4. Step 4: Simplify right side
    12,276x = 118,094,286.01
  5. Step 5: Solve for x
    x = 118,094,286.01/12,276
  6. Step 6: Final answer
    x = 9,619.93

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1.5x scale

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.