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Finding the Fourth Proportional to 14,245.72, 21,371.21 and 7,133.71

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Solution

The fourth proportional to 14,245.72, 21,371.21 and 7,133.71 is: 10,701.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,245.72 : 21,371.21 = 7,133.71 : x
  2. Step 2: Convert to fraction form
    14,245.72/21,371.21 = 7,133.71/x
  3. Step 3: Cross multiply
    14,245.72x = 21,371.21 × 7,133.71
  4. Step 4: Simplify right side
    14,245.72x = 152,456,014.49
  5. Step 5: Solve for x
    x = 152,456,014.49/14,245.72
  6. Step 6: Final answer
    x = 10,701.88

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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.