Home / 18,613.78-27,920.44-5,465.68

Finding the Fourth Proportional to 18,613.78, 27,920.44 and 5,465.68

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Solution

The fourth proportional to 18,613.78, 27,920.44 and 5,465.68 is: 8,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.78 : 27,920.44 = 5,465.68 : x
  2. Step 2: Convert to fraction form
    18,613.78/27,920.44 = 5,465.68/x
  3. Step 3: Cross multiply
    18,613.78x = 27,920.44 × 5,465.68
  4. Step 4: Simplify right side
    18,613.78x = 152,604,190.50
  5. Step 5: Solve for x
    x = 152,604,190.50/18,613.78
  6. Step 6: Final answer
    x = 8,198.45

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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.