Home / 13,656.80-20,485.60-5,336.48

Finding the Fourth Proportional to 13,656.80, 20,485.60 and 5,336.48

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Solution

The fourth proportional to 13,656.80, 20,485.60 and 5,336.48 is: 8,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.80 : 20,485.60 = 5,336.48 : x
  2. Step 2: Convert to fraction form
    13,656.80/20,485.60 = 5,336.48/x
  3. Step 3: Cross multiply
    13,656.80x = 20,485.60 × 5,336.48
  4. Step 4: Simplify right side
    13,656.80x = 109,320,994.69
  5. Step 5: Solve for x
    x = 109,320,994.69/13,656.80
  6. Step 6: Final answer
    x = 8,004.88

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1.5x scale

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.