Home / 18,145.28-27,225.60-7,761.92

Finding the Fourth Proportional to 18,145.28, 27,225.60 and 7,761.92

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Solution

The fourth proportional to 18,145.28, 27,225.60 and 7,761.92 is: 11,646.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.28 : 27,225.60 = 7,761.92 : x
  2. Step 2: Convert to fraction form
    18,145.28/27,225.60 = 7,761.92/x
  3. Step 3: Cross multiply
    18,145.28x = 27,225.60 × 7,761.92
  4. Step 4: Simplify right side
    18,145.28x = 211,322,929.15
  5. Step 5: Solve for x
    x = 211,322,929.15/18,145.28
  6. Step 6: Final answer
    x = 11,646.17

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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.