Home / 11,613.80-16,027.85-7,078.21

Finding the Fourth Proportional to 11,613.80, 16,027.85 and 7,078.21

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Solution

The fourth proportional to 11,613.80, 16,027.85 and 7,078.21 is: 9,768.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,613.80 : 16,027.85 = 7,078.21 : x
  2. Step 2: Convert to fraction form
    11,613.80/16,027.85 = 7,078.21/x
  3. Step 3: Cross multiply
    11,613.80x = 16,027.85 × 7,078.21
  4. Step 4: Simplify right side
    11,613.80x = 113,448,465.77
  5. Step 5: Solve for x
    x = 113,448,465.77/11,613.80
  6. Step 6: Final answer
    x = 9,768.42

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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.