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Finding the Fourth Proportional to 18,853.56, 28,283.88 and 8,993.53

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Solution

The fourth proportional to 18,853.56, 28,283.88 and 8,993.53 is: 13,491.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.56 : 28,283.88 = 8,993.53 : x
  2. Step 2: Convert to fraction form
    18,853.56/28,283.88 = 8,993.53/x
  3. Step 3: Cross multiply
    18,853.56x = 28,283.88 × 8,993.53
  4. Step 4: Simplify right side
    18,853.56x = 254,371,992.38
  5. Step 5: Solve for x
    x = 254,371,992.38/18,853.56
  6. Step 6: Final answer
    x = 13,491.99

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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.