Home / 13,982.40-20,973.60-4,748.40

Finding the Fourth Proportional to 13,982.40, 20,973.60 and 4,748.40

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Solution

The fourth proportional to 13,982.40, 20,973.60 and 4,748.40 is: 7,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.40 : 20,973.60 = 4,748.40 : x
  2. Step 2: Convert to fraction form
    13,982.40/20,973.60 = 4,748.40/x
  3. Step 3: Cross multiply
    13,982.40x = 20,973.60 × 4,748.40
  4. Step 4: Simplify right side
    13,982.40x = 99,591,042.24
  5. Step 5: Solve for x
    x = 99,591,042.24/13,982.40
  6. Step 6: Final answer
    x = 7,122.60

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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.