Home / 20,336.99-28,063.52-12,378.34

Finding the Fourth Proportional to 20,336.99, 28,063.52 and 12,378.34

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Solution

The fourth proportional to 20,336.99, 28,063.52 and 12,378.34 is: 17,081.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.99 : 28,063.52 = 12,378.34 : x
  2. Step 2: Convert to fraction form
    20,336.99/28,063.52 = 12,378.34/x
  3. Step 3: Cross multiply
    20,336.99x = 28,063.52 × 12,378.34
  4. Step 4: Simplify right side
    20,336.99x = 347,379,792.16
  5. Step 5: Solve for x
    x = 347,379,792.16/20,336.99
  6. Step 6: Final answer
    x = 17,081.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.