Home / 13,830.65-20,760.38-12,259.35

Finding the Fourth Proportional to 13,830.65, 20,760.38 and 12,259.35

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Solution

The fourth proportional to 13,830.65, 20,760.38 and 12,259.35 is: 18,401.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.65 : 20,760.38 = 12,259.35 : x
  2. Step 2: Convert to fraction form
    13,830.65/20,760.38 = 12,259.35/x
  3. Step 3: Cross multiply
    13,830.65x = 20,760.38 × 12,259.35
  4. Step 4: Simplify right side
    13,830.65x = 254,508,792.33
  5. Step 5: Solve for x
    x = 254,508,792.33/13,830.65
  6. Step 6: Final answer
    x = 18,401.80

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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.