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Finding the Fourth Proportional to 14,455, 21,672.76 and 6,659.56

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Solution

The fourth proportional to 14,455, 21,672.76 and 6,659.56 is: 9,984.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,455 : 21,672.76 = 6,659.56 : x
  2. Step 2: Convert to fraction form
    14,455/21,672.76 = 6,659.56/x
  3. Step 3: Cross multiply
    14,455x = 21,672.76 × 6,659.56
  4. Step 4: Simplify right side
    14,455x = 144,331,045.59
  5. Step 5: Solve for x
    x = 144,331,045.59/14,455
  6. Step 6: Final answer
    x = 9,984.85

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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.