Home / 19,679.88-27,155.97-12,019.32

Finding the Fourth Proportional to 19,679.88, 27,155.97 and 12,019.32

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Solution

The fourth proportional to 19,679.88, 27,155.97 and 12,019.32 is: 16,585.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.88 : 27,155.97 = 12,019.32 : x
  2. Step 2: Convert to fraction form
    19,679.88/27,155.97 = 12,019.32/x
  3. Step 3: Cross multiply
    19,679.88x = 27,155.97 × 12,019.32
  4. Step 4: Simplify right side
    19,679.88x = 326,396,293.34
  5. Step 5: Solve for x
    x = 326,396,293.34/19,679.88
  6. Step 6: Final answer
    x = 16,585.28

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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.