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Finding the Fourth Proportional to 14,951.76, 20,629.80 and 8,988

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Solution

The fourth proportional to 14,951.76, 20,629.80 and 8,988 is: 12,401.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,951.76 : 20,629.80 = 8,988 : x
  2. Step 2: Convert to fraction form
    14,951.76/20,629.80 = 8,988/x
  3. Step 3: Cross multiply
    14,951.76x = 20,629.80 × 8,988
  4. Step 4: Simplify right side
    14,951.76x = 185,420,642.40
  5. Step 5: Solve for x
    x = 185,420,642.40/14,951.76
  6. Step 6: Final answer
    x = 12,401.26

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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.