Home / 18,117.72-27,175.14-6,429.42

Finding the Fourth Proportional to 18,117.72, 27,175.14 and 6,429.42

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Solution

The fourth proportional to 18,117.72, 27,175.14 and 6,429.42 is: 9,643.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.72 : 27,175.14 = 6,429.42 : x
  2. Step 2: Convert to fraction form
    18,117.72/27,175.14 = 6,429.42/x
  3. Step 3: Cross multiply
    18,117.72x = 27,175.14 × 6,429.42
  4. Step 4: Simplify right side
    18,117.72x = 174,720,388.62
  5. Step 5: Solve for x
    x = 174,720,388.62/18,117.72
  6. Step 6: Final answer
    x = 9,643.62

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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.