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Finding the Fourth Proportional to 27,285.64, 40,918.38 and 21,453.64

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Solution

The fourth proportional to 27,285.64, 40,918.38 and 21,453.64 is: 32,172.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,285.64 : 40,918.38 = 21,453.64 : x
  2. Step 2: Convert to fraction form
    27,285.64/40,918.38 = 21,453.64/x
  3. Step 3: Cross multiply
    27,285.64x = 40,918.38 × 21,453.64
  4. Step 4: Simplify right side
    27,285.64x = 877,848,193.90
  5. Step 5: Solve for x
    x = 877,848,193.90/27,285.64
  6. Step 6: Final answer
    x = 32,172.53

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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.