Home / 13,765.80-18,953.64-12,149.04

Finding the Fourth Proportional to 13,765.80, 18,953.64 and 12,149.04

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Solution

The fourth proportional to 13,765.80, 18,953.64 and 12,149.04 is: 16,727.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.80 : 18,953.64 = 12,149.04 : x
  2. Step 2: Convert to fraction form
    13,765.80/18,953.64 = 12,149.04/x
  3. Step 3: Cross multiply
    13,765.80x = 18,953.64 × 12,149.04
  4. Step 4: Simplify right side
    13,765.80x = 230,268,530.51
  5. Step 5: Solve for x
    x = 230,268,530.51/13,765.80
  6. Step 6: Final answer
    x = 16,727.58

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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.