Home / 20,110.35-30,165.53-12,674.55

Finding the Fourth Proportional to 20,110.35, 30,165.53 and 12,674.55

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Solution

The fourth proportional to 20,110.35, 30,165.53 and 12,674.55 is: 19,011.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.35 : 30,165.53 = 12,674.55 : x
  2. Step 2: Convert to fraction form
    20,110.35/30,165.53 = 12,674.55/x
  3. Step 3: Cross multiply
    20,110.35x = 30,165.53 × 12,674.55
  4. Step 4: Simplify right side
    20,110.35x = 382,334,454.89
  5. Step 5: Solve for x
    x = 382,334,454.89/20,110.35
  6. Step 6: Final answer
    x = 19,011.83

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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.