Home / 13,430.79-20,146.32-3,571.47

Finding the Fourth Proportional to 13,430.79, 20,146.32 and 3,571.47

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Solution

The fourth proportional to 13,430.79, 20,146.32 and 3,571.47 is: 5,357.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.79 : 20,146.32 = 3,571.47 : x
  2. Step 2: Convert to fraction form
    13,430.79/20,146.32 = 3,571.47/x
  3. Step 3: Cross multiply
    13,430.79x = 20,146.32 × 3,571.47
  4. Step 4: Simplify right side
    13,430.79x = 71,951,977.49
  5. Step 5: Solve for x
    x = 71,951,977.49/13,430.79
  6. Step 6: Final answer
    x = 5,357.24

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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.