Home / 18,117.12-27,175.68-5,813.76

Finding the Fourth Proportional to 18,117.12, 27,175.68 and 5,813.76

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Solution

The fourth proportional to 18,117.12, 27,175.68 and 5,813.76 is: 8,720.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.12 : 27,175.68 = 5,813.76 : x
  2. Step 2: Convert to fraction form
    18,117.12/27,175.68 = 5,813.76/x
  3. Step 3: Cross multiply
    18,117.12x = 27,175.68 × 5,813.76
  4. Step 4: Simplify right side
    18,117.12x = 157,992,881.36
  5. Step 5: Solve for x
    x = 157,992,881.36/18,117.12
  6. Step 6: Final answer
    x = 8,720.64

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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.