Home / 20,586.25-30,920.70-12,282.46

Finding the Fourth Proportional to 20,586.25, 30,920.70 and 12,282.46

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Solution

The fourth proportional to 20,586.25, 30,920.70 and 12,282.46 is: 18,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.25 : 30,920.70 = 12,282.46 : x
  2. Step 2: Convert to fraction form
    20,586.25/30,920.70 = 12,282.46/x
  3. Step 3: Cross multiply
    20,586.25x = 30,920.70 × 12,282.46
  4. Step 4: Simplify right side
    20,586.25x = 379,782,260.92
  5. Step 5: Solve for x
    x = 379,782,260.92/20,586.25
  6. Step 6: Final answer
    x = 18,448.35

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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.