Home / 20,135.65-27,790.81-11,636.60

Finding the Fourth Proportional to 20,135.65, 27,790.81 and 11,636.60

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Solution

The fourth proportional to 20,135.65, 27,790.81 and 11,636.60 is: 16,060.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.65 : 27,790.81 = 11,636.60 : x
  2. Step 2: Convert to fraction form
    20,135.65/27,790.81 = 11,636.60/x
  3. Step 3: Cross multiply
    20,135.65x = 27,790.81 × 11,636.60
  4. Step 4: Simplify right side
    20,135.65x = 323,390,371.60
  5. Step 5: Solve for x
    x = 323,390,371.60/20,135.65
  6. Step 6: Final answer
    x = 16,060.59

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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.