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Finding the Fourth Proportional to 14,076.40, 21,114.60 and 8,892.40

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Solution

The fourth proportional to 14,076.40, 21,114.60 and 8,892.40 is: 13,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,076.40 : 21,114.60 = 8,892.40 : x
  2. Step 2: Convert to fraction form
    14,076.40/21,114.60 = 8,892.40/x
  3. Step 3: Cross multiply
    14,076.40x = 21,114.60 × 8,892.40
  4. Step 4: Simplify right side
    14,076.40x = 187,759,469.04
  5. Step 5: Solve for x
    x = 187,759,469.04/14,076.40
  6. Step 6: Final answer
    x = 13,338.60

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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.