Home / 13,705.46-20,536.32-8,145.62

Finding the Fourth Proportional to 13,705.46, 20,536.32 and 8,145.62

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Solution

The fourth proportional to 13,705.46, 20,536.32 and 8,145.62 is: 12,205.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.46 : 20,536.32 = 8,145.62 : x
  2. Step 2: Convert to fraction form
    13,705.46/20,536.32 = 8,145.62/x
  3. Step 3: Cross multiply
    13,705.46x = 20,536.32 × 8,145.62
  4. Step 4: Simplify right side
    13,705.46x = 167,281,058.92
  5. Step 5: Solve for x
    x = 167,281,058.92/13,705.46
  6. Step 6: Final answer
    x = 12,205.43

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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.