Home / 20,072.08-27,699.66-11,119.77

Finding the Fourth Proportional to 20,072.08, 27,699.66 and 11,119.77

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Solution

The fourth proportional to 20,072.08, 27,699.66 and 11,119.77 is: 15,345.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.08 : 27,699.66 = 11,119.77 : x
  2. Step 2: Convert to fraction form
    20,072.08/27,699.66 = 11,119.77/x
  3. Step 3: Cross multiply
    20,072.08x = 27,699.66 × 11,119.77
  4. Step 4: Simplify right side
    20,072.08x = 308,013,848.28
  5. Step 5: Solve for x
    x = 308,013,848.28/20,072.08
  6. Step 6: Final answer
    x = 15,345.39

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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.