Home / 13,881.66-20,820.33-4,645.50

Finding the Fourth Proportional to 13,881.66, 20,820.33 and 4,645.50

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Solution

The fourth proportional to 13,881.66, 20,820.33 and 4,645.50 is: 6,967.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.66 : 20,820.33 = 4,645.50 : x
  2. Step 2: Convert to fraction form
    13,881.66/20,820.33 = 4,645.50/x
  3. Step 3: Cross multiply
    13,881.66x = 20,820.33 × 4,645.50
  4. Step 4: Simplify right side
    13,881.66x = 96,720,843.02
  5. Step 5: Solve for x
    x = 96,720,843.02/13,881.66
  6. Step 6: Final answer
    x = 6,967.53

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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.