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Finding the Fourth Proportional to 18,999.24, 28,483.20 and 14,310.24

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Solution

The fourth proportional to 18,999.24, 28,483.20 and 14,310.24 is: 21,453.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.24 : 28,483.20 = 14,310.24 : x
  2. Step 2: Convert to fraction form
    18,999.24/28,483.20 = 14,310.24/x
  3. Step 3: Cross multiply
    18,999.24x = 28,483.20 × 14,310.24
  4. Step 4: Simplify right side
    18,999.24x = 407,601,427.97
  5. Step 5: Solve for x
    x = 407,601,427.97/18,999.24
  6. Step 6: Final answer
    x = 21,453.56

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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.