Home / 13,830.76-20,749.34-5,065.80

Finding the Fourth Proportional to 13,830.76, 20,749.34 and 5,065.80

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Solution

The fourth proportional to 13,830.76, 20,749.34 and 5,065.80 is: 7,599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.76 : 20,749.34 = 5,065.80 : x
  2. Step 2: Convert to fraction form
    13,830.76/20,749.34 = 5,065.80/x
  3. Step 3: Cross multiply
    13,830.76x = 20,749.34 × 5,065.80
  4. Step 4: Simplify right side
    13,830.76x = 105,112,006.57
  5. Step 5: Solve for x
    x = 105,112,006.57/13,830.76
  6. Step 6: Final answer
    x = 7,599.87

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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.