Home / 20,091.12-27,713.39-13,285.10

Finding the Fourth Proportional to 20,091.12, 27,713.39 and 13,285.10

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Solution

The fourth proportional to 20,091.12, 27,713.39 and 13,285.10 is: 18,325.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.12 : 27,713.39 = 13,285.10 : x
  2. Step 2: Convert to fraction form
    20,091.12/27,713.39 = 13,285.10/x
  3. Step 3: Cross multiply
    20,091.12x = 27,713.39 × 13,285.10
  4. Step 4: Simplify right side
    20,091.12x = 368,174,952.50
  5. Step 5: Solve for x
    x = 368,174,952.50/20,091.12
  6. Step 6: Final answer
    x = 18,325.26

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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.