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Finding the Fourth Proportional to 14,356.50, 19,811.94 and 7,982.88

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Solution

The fourth proportional to 14,356.50, 19,811.94 and 7,982.88 is: 11,016.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,356.50 : 19,811.94 = 7,982.88 : x
  2. Step 2: Convert to fraction form
    14,356.50/19,811.94 = 7,982.88/x
  3. Step 3: Cross multiply
    14,356.50x = 19,811.94 × 7,982.88
  4. Step 4: Simplify right side
    14,356.50x = 158,156,339.59
  5. Step 5: Solve for x
    x = 158,156,339.59/14,356.50
  6. Step 6: Final answer
    x = 11,016.36

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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.