Home / 13,982.04-20,973.72-4,121.40

Finding the Fourth Proportional to 13,982.04, 20,973.72 and 4,121.40

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Solution

The fourth proportional to 13,982.04, 20,973.72 and 4,121.40 is: 6,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.04 : 20,973.72 = 4,121.40 : x
  2. Step 2: Convert to fraction form
    13,982.04/20,973.72 = 4,121.40/x
  3. Step 3: Cross multiply
    13,982.04x = 20,973.72 × 4,121.40
  4. Step 4: Simplify right side
    13,982.04x = 86,441,069.00
  5. Step 5: Solve for x
    x = 86,441,069.00/13,982.04
  6. Step 6: Final answer
    x = 6,182.30

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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.