Home / 14,081.88-21,122-4,221.40

Finding the Fourth Proportional to 14,081.88, 21,122 and 4,221.40

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Solution

The fourth proportional to 14,081.88, 21,122 and 4,221.40 is: 6,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,081.88 : 21,122 = 4,221.40 : x
  2. Step 2: Convert to fraction form
    14,081.88/21,122 = 4,221.40/x
  3. Step 3: Cross multiply
    14,081.88x = 21,122 × 4,221.40
  4. Step 4: Simplify right side
    14,081.88x = 89,164,410.80
  5. Step 5: Solve for x
    x = 89,164,410.80/14,081.88
  6. Step 6: Final answer
    x = 6,331.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.