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Finding the Fourth Proportional to 14,800.28, 20,425 and 8,512.66

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Solution

The fourth proportional to 14,800.28, 20,425 and 8,512.66 is: 11,747.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,800.28 : 20,425 = 8,512.66 : x
  2. Step 2: Convert to fraction form
    14,800.28/20,425 = 8,512.66/x
  3. Step 3: Cross multiply
    14,800.28x = 20,425 × 8,512.66
  4. Step 4: Simplify right side
    14,800.28x = 173,871,080.50
  5. Step 5: Solve for x
    x = 173,871,080.50/14,800.28
  6. Step 6: Final answer
    x = 11,747.82

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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.