Home / 13,721.52-20,582.70-4,361.64

Finding the Fourth Proportional to 13,721.52, 20,582.70 and 4,361.64

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Solution

The fourth proportional to 13,721.52, 20,582.70 and 4,361.64 is: 6,542.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.52 : 20,582.70 = 4,361.64 : x
  2. Step 2: Convert to fraction form
    13,721.52/20,582.70 = 4,361.64/x
  3. Step 3: Cross multiply
    13,721.52x = 20,582.70 × 4,361.64
  4. Step 4: Simplify right side
    13,721.52x = 89,774,327.63
  5. Step 5: Solve for x
    x = 89,774,327.63/13,721.52
  6. Step 6: Final answer
    x = 6,542.59

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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.