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Finding the Fourth Proportional to 12,672.65, 17,785.45 and 12,672.65

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Solution

The fourth proportional to 12,672.65, 17,785.45 and 12,672.65 is: 17,785.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.65 : 17,785.45 = 12,672.65 : x
  2. Step 2: Convert to fraction form
    12,672.65/17,785.45 = 12,672.65/x
  3. Step 3: Cross multiply
    12,672.65x = 17,785.45 × 12,672.65
  4. Step 4: Simplify right side
    12,672.65x = 225,388,782.94
  5. Step 5: Solve for x
    x = 225,388,782.94/12,672.65
  6. Step 6: Final answer
    x = 17,785.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.