Home / 18,821.81-28,228.13-6,338.59

Finding the Fourth Proportional to 18,821.81, 28,228.13 and 6,338.59

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Solution

The fourth proportional to 18,821.81, 28,228.13 and 6,338.59 is: 9,506.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.81 : 28,228.13 = 6,338.59 : x
  2. Step 2: Convert to fraction form
    18,821.81/28,228.13 = 6,338.59/x
  3. Step 3: Cross multiply
    18,821.81x = 28,228.13 × 6,338.59
  4. Step 4: Simplify right side
    18,821.81x = 178,926,369.70
  5. Step 5: Solve for x
    x = 178,926,369.70/18,821.81
  6. Step 6: Final answer
    x = 9,506.33

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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.