Home / 13,656.87-20,485.43-3,796.91

Finding the Fourth Proportional to 13,656.87, 20,485.43 and 3,796.91

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Solution

The fourth proportional to 13,656.87, 20,485.43 and 3,796.91 is: 5,695.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.87 : 20,485.43 = 3,796.91 : x
  2. Step 2: Convert to fraction form
    13,656.87/20,485.43 = 3,796.91/x
  3. Step 3: Cross multiply
    13,656.87x = 20,485.43 × 3,796.91
  4. Step 4: Simplify right side
    13,656.87x = 77,781,400.77
  5. Step 5: Solve for x
    x = 77,781,400.77/13,656.87
  6. Step 6: Final answer
    x = 5,695.41

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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.