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Finding the Fourth Proportional to 18,613.32, 27,919.98 and 5,465.40

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Solution

The fourth proportional to 18,613.32, 27,919.98 and 5,465.40 is: 8,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.32 : 27,919.98 = 5,465.40 : x
  2. Step 2: Convert to fraction form
    18,613.32/27,919.98 = 5,465.40/x
  3. Step 3: Cross multiply
    18,613.32x = 27,919.98 × 5,465.40
  4. Step 4: Simplify right side
    18,613.32x = 152,593,858.69
  5. Step 5: Solve for x
    x = 152,593,858.69/18,613.32
  6. Step 6: Final answer
    x = 8,198.10

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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.