Home / 13,746.75-18,982.14-8,719.89

Finding the Fourth Proportional to 13,746.75, 18,982.14 and 8,719.89

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Solution

The fourth proportional to 13,746.75, 18,982.14 and 8,719.89 is: 12,040.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.75 : 18,982.14 = 8,719.89 : x
  2. Step 2: Convert to fraction form
    13,746.75/18,982.14 = 8,719.89/x
  3. Step 3: Cross multiply
    13,746.75x = 18,982.14 × 8,719.89
  4. Step 4: Simplify right side
    13,746.75x = 165,522,172.76
  5. Step 5: Solve for x
    x = 165,522,172.76/13,746.75
  6. Step 6: Final answer
    x = 12,040.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.