Home / 13,583.82-20,363.58-8,639.58

Finding the Fourth Proportional to 13,583.82, 20,363.58 and 8,639.58

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Solution

The fourth proportional to 13,583.82, 20,363.58 and 8,639.58 is: 12,951.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.82 : 20,363.58 = 8,639.58 : x
  2. Step 2: Convert to fraction form
    13,583.82/20,363.58 = 8,639.58/x
  3. Step 3: Cross multiply
    13,583.82x = 20,363.58 × 8,639.58
  4. Step 4: Simplify right side
    13,583.82x = 175,932,778.50
  5. Step 5: Solve for x
    x = 175,932,778.50/13,583.82
  6. Step 6: Final answer
    x = 12,951.64

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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.