Home / 18,954.24-28,431.36-18,435.84

Finding the Fourth Proportional to 18,954.24, 28,431.36 and 18,435.84

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Solution

The fourth proportional to 18,954.24, 28,431.36 and 18,435.84 is: 27,653.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.24 : 28,431.36 = 18,435.84 : x
  2. Step 2: Convert to fraction form
    18,954.24/28,431.36 = 18,435.84/x
  3. Step 3: Cross multiply
    18,954.24x = 28,431.36 × 18,435.84
  4. Step 4: Simplify right side
    18,954.24x = 524,156,003.94
  5. Step 5: Solve for x
    x = 524,156,003.94/18,954.24
  6. Step 6: Final answer
    x = 27,653.76

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Double scale
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Similar ratio
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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.