Home / 13,881.22-20,820.54-3,886.87

Finding the Fourth Proportional to 13,881.22, 20,820.54 and 3,886.87

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Solution

The fourth proportional to 13,881.22, 20,820.54 and 3,886.87 is: 5,829.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.22 : 20,820.54 = 3,886.87 : x
  2. Step 2: Convert to fraction form
    13,881.22/20,820.54 = 3,886.87/x
  3. Step 3: Cross multiply
    13,881.22x = 20,820.54 × 3,886.87
  4. Step 4: Simplify right side
    13,881.22x = 80,926,746.75
  5. Step 5: Solve for x
    x = 80,926,746.75/13,881.22
  6. Step 6: Final answer
    x = 5,829.94

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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.