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Finding the Fourth Proportional to 14,523.60, 21,787.02 and 5,287.44

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Solution

The fourth proportional to 14,523.60, 21,787.02 and 5,287.44 is: 7,931.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,523.60 : 21,787.02 = 5,287.44 : x
  2. Step 2: Convert to fraction form
    14,523.60/21,787.02 = 5,287.44/x
  3. Step 3: Cross multiply
    14,523.60x = 21,787.02 × 5,287.44
  4. Step 4: Simplify right side
    14,523.60x = 115,197,561.03
  5. Step 5: Solve for x
    x = 115,197,561.03/14,523.60
  6. Step 6: Final answer
    x = 7,931.75

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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.