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Finding the Fourth Proportional to 19,867, 27,415.48 and 11,907.68

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Solution

The fourth proportional to 19,867, 27,415.48 and 11,907.68 is: 16,432.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,867 : 27,415.48 = 11,907.68 : x
  2. Step 2: Convert to fraction form
    19,867/27,415.48 = 11,907.68/x
  3. Step 3: Cross multiply
    19,867x = 27,415.48 × 11,907.68
  4. Step 4: Simplify right side
    19,867x = 326,454,762.89
  5. Step 5: Solve for x
    x = 326,454,762.89/19,867
  6. Step 6: Final answer
    x = 16,432.01

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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.