Home / 18,518.46-25,563.90-11,813.28

Finding the Fourth Proportional to 18,518.46, 25,563.90 and 11,813.28

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Solution

The fourth proportional to 18,518.46, 25,563.90 and 11,813.28 is: 16,307.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.46 : 25,563.90 = 11,813.28 : x
  2. Step 2: Convert to fraction form
    18,518.46/25,563.90 = 11,813.28/x
  3. Step 3: Cross multiply
    18,518.46x = 25,563.90 × 11,813.28
  4. Step 4: Simplify right side
    18,518.46x = 301,993,508.59
  5. Step 5: Solve for x
    x = 301,993,508.59/18,518.46
  6. Step 6: Final answer
    x = 16,307.70

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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.