Home / 13,730.48-20,599.60-3,869.86

Finding the Fourth Proportional to 13,730.48, 20,599.60 and 3,869.86

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Solution

The fourth proportional to 13,730.48, 20,599.60 and 3,869.86 is: 5,805.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.48 : 20,599.60 = 3,869.86 : x
  2. Step 2: Convert to fraction form
    13,730.48/20,599.60 = 3,869.86/x
  3. Step 3: Cross multiply
    13,730.48x = 20,599.60 × 3,869.86
  4. Step 4: Simplify right side
    13,730.48x = 79,717,568.06
  5. Step 5: Solve for x
    x = 79,717,568.06/13,730.48
  6. Step 6: Final answer
    x = 5,805.88

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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.