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Finding the Fourth Proportional to 18,455.40, 27,683.10 and 17,216.10

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Solution

The fourth proportional to 18,455.40, 27,683.10 and 17,216.10 is: 25,824.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.40 : 27,683.10 = 17,216.10 : x
  2. Step 2: Convert to fraction form
    18,455.40/27,683.10 = 17,216.10/x
  3. Step 3: Cross multiply
    18,455.40x = 27,683.10 × 17,216.10
  4. Step 4: Simplify right side
    18,455.40x = 476,595,017.91
  5. Step 5: Solve for x
    x = 476,595,017.91/18,455.40
  6. Step 6: Final answer
    x = 25,824.15

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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.