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Finding the Fourth Proportional to 18,703.37, 25,813.99 and 11,150.19

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Solution

The fourth proportional to 18,703.37, 25,813.99 and 11,150.19 is: 15,389.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.37 : 25,813.99 = 11,150.19 : x
  2. Step 2: Convert to fraction form
    18,703.37/25,813.99 = 11,150.19/x
  3. Step 3: Cross multiply
    18,703.37x = 25,813.99 × 11,150.19
  4. Step 4: Simplify right side
    18,703.37x = 287,830,893.16
  5. Step 5: Solve for x
    x = 287,830,893.16/18,703.37
  6. Step 6: Final answer
    x = 15,389.25

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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.