Home / 18,918.41-28,376.58-5,769.68

Finding the Fourth Proportional to 18,918.41, 28,376.58 and 5,769.68

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Solution

The fourth proportional to 18,918.41, 28,376.58 and 5,769.68 is: 8,654.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.41 : 28,376.58 = 5,769.68 : x
  2. Step 2: Convert to fraction form
    18,918.41/28,376.58 = 5,769.68/x
  3. Step 3: Cross multiply
    18,918.41x = 28,376.58 × 5,769.68
  4. Step 4: Simplify right side
    18,918.41x = 163,723,786.09
  5. Step 5: Solve for x
    x = 163,723,786.09/18,918.41
  6. Step 6: Final answer
    x = 8,654.20

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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.