Home / 20,078.03-27,706.92-11,580.50

Finding the Fourth Proportional to 20,078.03, 27,706.92 and 11,580.50

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Solution

The fourth proportional to 20,078.03, 27,706.92 and 11,580.50 is: 15,980.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.03 : 27,706.92 = 11,580.50 : x
  2. Step 2: Convert to fraction form
    20,078.03/27,706.92 = 11,580.50/x
  3. Step 3: Cross multiply
    20,078.03x = 27,706.92 × 11,580.50
  4. Step 4: Simplify right side
    20,078.03x = 320,859,987.06
  5. Step 5: Solve for x
    x = 320,859,987.06/20,078.03
  6. Step 6: Final answer
    x = 15,980.65

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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.