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Finding the Fourth Proportional to 19,993.65, 27,596.75 and 12,435.49

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Solution

The fourth proportional to 19,993.65, 27,596.75 and 12,435.49 is: 17,164.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.65 : 27,596.75 = 12,435.49 : x
  2. Step 2: Convert to fraction form
    19,993.65/27,596.75 = 12,435.49/x
  3. Step 3: Cross multiply
    19,993.65x = 27,596.75 × 12,435.49
  4. Step 4: Simplify right side
    19,993.65x = 343,179,034.50
  5. Step 5: Solve for x
    x = 343,179,034.50/19,993.65
  6. Step 6: Final answer
    x = 17,164.40

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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.