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Finding the Fourth Proportional to 18,573.37, 27,870.41 and 14,421.71

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Solution

The fourth proportional to 18,573.37, 27,870.41 and 14,421.71 is: 21,640.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.37 : 27,870.41 = 14,421.71 : x
  2. Step 2: Convert to fraction form
    18,573.37/27,870.41 = 14,421.71/x
  3. Step 3: Cross multiply
    18,573.37x = 27,870.41 × 14,421.71
  4. Step 4: Simplify right side
    18,573.37x = 401,939,076.33
  5. Step 5: Solve for x
    x = 401,939,076.33/18,573.37
  6. Step 6: Final answer
    x = 21,640.61

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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.