Home / 20,072.08-27,699.40-11,240.08

Finding the Fourth Proportional to 20,072.08, 27,699.40 and 11,240.08

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Solution

The fourth proportional to 20,072.08, 27,699.40 and 11,240.08 is: 15,511.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.08 : 27,699.40 = 11,240.08 : x
  2. Step 2: Convert to fraction form
    20,072.08/27,699.40 = 11,240.08/x
  3. Step 3: Cross multiply
    20,072.08x = 27,699.40 × 11,240.08
  4. Step 4: Simplify right side
    20,072.08x = 311,343,471.95
  5. Step 5: Solve for x
    x = 311,343,471.95/20,072.08
  6. Step 6: Final answer
    x = 15,511.27

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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.