Home / 13,683.35-20,466.70-8,405.39

Finding the Fourth Proportional to 13,683.35, 20,466.70 and 8,405.39

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Solution

The fourth proportional to 13,683.35, 20,466.70 and 8,405.39 is: 12,572.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,683.35 : 20,466.70 = 8,405.39 : x
  2. Step 2: Convert to fraction form
    13,683.35/20,466.70 = 8,405.39/x
  3. Step 3: Cross multiply
    13,683.35x = 20,466.70 × 8,405.39
  4. Step 4: Simplify right side
    13,683.35x = 172,030,625.67
  5. Step 5: Solve for x
    x = 172,030,625.67/13,683.35
  6. Step 6: Final answer
    x = 12,572.26

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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.