Home / 18,684.50-25,783.38-11,131.38

Finding the Fourth Proportional to 18,684.50, 25,783.38 and 11,131.38

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Solution

The fourth proportional to 18,684.50, 25,783.38 and 11,131.38 is: 15,360.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.50 : 25,783.38 = 11,131.38 : x
  2. Step 2: Convert to fraction form
    18,684.50/25,783.38 = 11,131.38/x
  3. Step 3: Cross multiply
    18,684.50x = 25,783.38 × 11,131.38
  4. Step 4: Simplify right side
    18,684.50x = 287,004,600.46
  5. Step 5: Solve for x
    x = 287,004,600.46/18,684.50
  6. Step 6: Final answer
    x = 15,360.57

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Half scale
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Double scale
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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.