Home / 13,802.60-20,701.56-3,939.62

Finding the Fourth Proportional to 13,802.60, 20,701.56 and 3,939.62

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Solution

The fourth proportional to 13,802.60, 20,701.56 and 3,939.62 is: 5,908.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,802.60 : 20,701.56 = 3,939.62 : x
  2. Step 2: Convert to fraction form
    13,802.60/20,701.56 = 3,939.62/x
  3. Step 3: Cross multiply
    13,802.60x = 20,701.56 × 3,939.62
  4. Step 4: Simplify right side
    13,802.60x = 81,556,279.81
  5. Step 5: Solve for x
    x = 81,556,279.81/13,802.60
  6. Step 6: Final answer
    x = 5,908.76

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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.