Home / 13,965.35-20,945.52-3,970.76

Finding the Fourth Proportional to 13,965.35, 20,945.52 and 3,970.76

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Solution

The fourth proportional to 13,965.35, 20,945.52 and 3,970.76 is: 5,955.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.35 : 20,945.52 = 3,970.76 : x
  2. Step 2: Convert to fraction form
    13,965.35/20,945.52 = 3,970.76/x
  3. Step 3: Cross multiply
    13,965.35x = 20,945.52 × 3,970.76
  4. Step 4: Simplify right side
    13,965.35x = 83,169,528.27
  5. Step 5: Solve for x
    x = 83,169,528.27/13,965.35
  6. Step 6: Final answer
    x = 5,955.42

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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.