Home / 20,786.56-28,636.80-14,487.68

Finding the Fourth Proportional to 20,786.56, 28,636.80 and 14,487.68

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Solution

The fourth proportional to 20,786.56, 28,636.80 and 14,487.68 is: 19,959.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.56 : 28,636.80 = 14,487.68 : x
  2. Step 2: Convert to fraction form
    20,786.56/28,636.80 = 14,487.68/x
  3. Step 3: Cross multiply
    20,786.56x = 28,636.80 × 14,487.68
  4. Step 4: Simplify right side
    20,786.56x = 414,880,794.62
  5. Step 5: Solve for x
    x = 414,880,794.62/20,786.56
  6. Step 6: Final answer
    x = 19,959.09

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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.