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Finding the Fourth Proportional to 13,683.70, 18,211.03 and 13,683.70

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Solution

The fourth proportional to 13,683.70, 18,211.03 and 13,683.70 is: 18,211.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,683.70 : 18,211.03 = 13,683.70 : x
  2. Step 2: Convert to fraction form
    13,683.70/18,211.03 = 13,683.70/x
  3. Step 3: Cross multiply
    13,683.70x = 18,211.03 × 13,683.70
  4. Step 4: Simplify right side
    13,683.70x = 249,194,271.21
  5. Step 5: Solve for x
    x = 249,194,271.21/13,683.70
  6. Step 6: Final answer
    x = 18,211.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.