Home / 13,865.90-20,802.50-4,982.13

Finding the Fourth Proportional to 13,865.90, 20,802.50 and 4,982.13

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Solution

The fourth proportional to 13,865.90, 20,802.50 and 4,982.13 is: 7,474.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.90 : 20,802.50 = 4,982.13 : x
  2. Step 2: Convert to fraction form
    13,865.90/20,802.50 = 4,982.13/x
  3. Step 3: Cross multiply
    13,865.90x = 20,802.50 × 4,982.13
  4. Step 4: Simplify right side
    13,865.90x = 103,640,771.78
  5. Step 5: Solve for x
    x = 103,640,771.78/13,865.90
  6. Step 6: Final answer
    x = 7,474.51

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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.