Home / 18,518.18-27,769.80-6,828.80

Finding the Fourth Proportional to 18,518.18, 27,769.80 and 6,828.80

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Solution

The fourth proportional to 18,518.18, 27,769.80 and 6,828.80 is: 10,240.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.18 : 27,769.80 = 6,828.80 : x
  2. Step 2: Convert to fraction form
    18,518.18/27,769.80 = 6,828.80/x
  3. Step 3: Cross multiply
    18,518.18x = 27,769.80 × 6,828.80
  4. Step 4: Simplify right side
    18,518.18x = 189,634,410.24
  5. Step 5: Solve for x
    x = 189,634,410.24/18,518.18
  6. Step 6: Final answer
    x = 10,240.45

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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.