Home / 13,984.52-20,971.50-4,121

Finding the Fourth Proportional to 13,984.52, 20,971.50 and 4,121

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Solution

The fourth proportional to 13,984.52, 20,971.50 and 4,121 is: 6,179.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.52 : 20,971.50 = 4,121 : x
  2. Step 2: Convert to fraction form
    13,984.52/20,971.50 = 4,121/x
  3. Step 3: Cross multiply
    13,984.52x = 20,971.50 × 4,121
  4. Step 4: Simplify right side
    13,984.52x = 86,423,551.50
  5. Step 5: Solve for x
    x = 86,423,551.50/13,984.52
  6. Step 6: Final answer
    x = 6,179.94

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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.