Home / 13,965.48-20,947.86-5,645.28

Finding the Fourth Proportional to 13,965.48, 20,947.86 and 5,645.28

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Solution

The fourth proportional to 13,965.48, 20,947.86 and 5,645.28 is: 8,467.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.48 : 20,947.86 = 5,645.28 : x
  2. Step 2: Convert to fraction form
    13,965.48/20,947.86 = 5,645.28/x
  3. Step 3: Cross multiply
    13,965.48x = 20,947.86 × 5,645.28
  4. Step 4: Simplify right side
    13,965.48x = 118,256,535.10
  5. Step 5: Solve for x
    x = 118,256,535.10/13,965.48
  6. Step 6: Final answer
    x = 8,467.77

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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.