Home / 20,078.23-27,707.50-11,580.37

Finding the Fourth Proportional to 20,078.23, 27,707.50 and 11,580.37

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Solution

The fourth proportional to 20,078.23, 27,707.50 and 11,580.37 is: 15,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.23 : 27,707.50 = 11,580.37 : x
  2. Step 2: Convert to fraction form
    20,078.23/27,707.50 = 11,580.37/x
  3. Step 3: Cross multiply
    20,078.23x = 27,707.50 × 11,580.37
  4. Step 4: Simplify right side
    20,078.23x = 320,863,101.78
  5. Step 5: Solve for x
    x = 320,863,101.78/20,078.23
  6. Step 6: Final answer
    x = 15,980.64

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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.