Home / 21,853.44-30,155.22-12,291.36

Finding the Fourth Proportional to 21,853.44, 30,155.22 and 12,291.36

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Solution

The fourth proportional to 21,853.44, 30,155.22 and 12,291.36 is: 16,960.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,853.44 : 30,155.22 = 12,291.36 : x
  2. Step 2: Convert to fraction form
    21,853.44/30,155.22 = 12,291.36/x
  3. Step 3: Cross multiply
    21,853.44x = 30,155.22 × 12,291.36
  4. Step 4: Simplify right side
    21,853.44x = 370,648,664.90
  5. Step 5: Solve for x
    x = 370,648,664.90/21,853.44
  6. Step 6: Final answer
    x = 16,960.66

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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.