Home / 18,197.60-27,279.08-7,111.36

Finding the Fourth Proportional to 18,197.60, 27,279.08 and 7,111.36

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Solution

The fourth proportional to 18,197.60, 27,279.08 and 7,111.36 is: 10,660.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,197.60 : 27,279.08 = 7,111.36 : x
  2. Step 2: Convert to fraction form
    18,197.60/27,279.08 = 7,111.36/x
  3. Step 3: Cross multiply
    18,197.60x = 27,279.08 × 7,111.36
  4. Step 4: Simplify right side
    18,197.60x = 193,991,358.35
  5. Step 5: Solve for x
    x = 193,991,358.35/18,197.60
  6. Step 6: Final answer
    x = 10,660.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.