Home / 18,813.54-25,980.24-12,110.80

Finding the Fourth Proportional to 18,813.54, 25,980.24 and 12,110.80

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Solution

The fourth proportional to 18,813.54, 25,980.24 and 12,110.80 is: 16,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.54 : 25,980.24 = 12,110.80 : x
  2. Step 2: Convert to fraction form
    18,813.54/25,980.24 = 12,110.80/x
  3. Step 3: Cross multiply
    18,813.54x = 25,980.24 × 12,110.80
  4. Step 4: Simplify right side
    18,813.54x = 314,641,360.69
  5. Step 5: Solve for x
    x = 314,641,360.69/18,813.54
  6. Step 6: Final answer
    x = 16,724.20

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1.5x scale

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.