Home / 20,187.57-27,858.48-11,235.00

Finding the Fourth Proportional to 20,187.57, 27,858.48 and 11,235.00

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Solution

The fourth proportional to 20,187.57, 27,858.48 and 11,235.00 is: 15,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.57 : 27,858.48 = 11,235.00 : x
  2. Step 2: Convert to fraction form
    20,187.57/27,858.48 = 11,235.00/x
  3. Step 3: Cross multiply
    20,187.57x = 27,858.48 × 11,235.00
  4. Step 4: Simplify right side
    20,187.57x = 312,989,876.20
  5. Step 5: Solve for x
    x = 312,989,876.20/20,187.57
  6. Step 6: Final answer
    x = 15,504.09

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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.