Home / 20,796.79-28,720.54-13,246.50

Finding the Fourth Proportional to 20,796.79, 28,720.54 and 13,246.50

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Solution

The fourth proportional to 20,796.79, 28,720.54 and 13,246.50 is: 18,293.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.79 : 28,720.54 = 13,246.50 : x
  2. Step 2: Convert to fraction form
    20,796.79/28,720.54 = 13,246.50/x
  3. Step 3: Cross multiply
    20,796.79x = 28,720.54 × 13,246.50
  4. Step 4: Simplify right side
    20,796.79x = 380,446,633.11
  5. Step 5: Solve for x
    x = 380,446,633.11/20,796.79
  6. Step 6: Final answer
    x = 18,293.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.