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Finding the Fourth Proportional to 14,480.66, 19,986.43 and 8,817.28

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Solution

The fourth proportional to 14,480.66, 19,986.43 and 8,817.28 is: 12,169.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,480.66 : 19,986.43 = 8,817.28 : x
  2. Step 2: Convert to fraction form
    14,480.66/19,986.43 = 8,817.28/x
  3. Step 3: Cross multiply
    14,480.66x = 19,986.43 × 8,817.28
  4. Step 4: Simplify right side
    14,480.66x = 176,225,877.50
  5. Step 5: Solve for x
    x = 176,225,877.50/14,480.66
  6. Step 6: Final answer
    x = 12,169.74

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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.