Home / 13,620.42-18,796.16-7,651.92

Finding the Fourth Proportional to 13,620.42, 18,796.16 and 7,651.92

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Solution

The fourth proportional to 13,620.42, 18,796.16 and 7,651.92 is: 10,559.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.42 : 18,796.16 = 7,651.92 : x
  2. Step 2: Convert to fraction form
    13,620.42/18,796.16 = 7,651.92/x
  3. Step 3: Cross multiply
    13,620.42x = 18,796.16 × 7,651.92
  4. Step 4: Simplify right side
    13,620.42x = 143,826,712.63
  5. Step 5: Solve for x
    x = 143,826,712.63/13,620.42
  6. Step 6: Final answer
    x = 10,559.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.