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Finding the Fourth Proportional to 18,223.34, 27,321.03 and 8,355.51

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Solution

The fourth proportional to 18,223.34, 27,321.03 and 8,355.51 is: 12,526.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,223.34 : 27,321.03 = 8,355.51 : x
  2. Step 2: Convert to fraction form
    18,223.34/27,321.03 = 8,355.51/x
  3. Step 3: Cross multiply
    18,223.34x = 27,321.03 × 8,355.51
  4. Step 4: Simplify right side
    18,223.34x = 228,281,139.38
  5. Step 5: Solve for x
    x = 228,281,139.38/18,223.34
  6. Step 6: Final answer
    x = 12,526.86

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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.