Home / 18,620.72-27,931.44-14,905.68

Finding the Fourth Proportional to 18,620.72, 27,931.44 and 14,905.68

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Solution

The fourth proportional to 18,620.72, 27,931.44 and 14,905.68 is: 22,358.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.72 : 27,931.44 = 14,905.68 : x
  2. Step 2: Convert to fraction form
    18,620.72/27,931.44 = 14,905.68/x
  3. Step 3: Cross multiply
    18,620.72x = 27,931.44 × 14,905.68
  4. Step 4: Simplify right side
    18,620.72x = 416,337,106.58
  5. Step 5: Solve for x
    x = 416,337,106.58/18,620.72
  6. Step 6: Final answer
    x = 22,358.81

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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.