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Finding the Fourth Proportional to 14,276.28, 19,701.24 and 8,687.28

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Solution

The fourth proportional to 14,276.28, 19,701.24 and 8,687.28 is: 11,988.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,276.28 : 19,701.24 = 8,687.28 : x
  2. Step 2: Convert to fraction form
    14,276.28/19,701.24 = 8,687.28/x
  3. Step 3: Cross multiply
    14,276.28x = 19,701.24 × 8,687.28
  4. Step 4: Simplify right side
    14,276.28x = 171,150,188.23
  5. Step 5: Solve for x
    x = 171,150,188.23/14,276.28
  6. Step 6: Final answer
    x = 11,988.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.