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Finding the Fourth Proportional to 14,800.70, 20,424.90 and 8,086.72

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Solution

The fourth proportional to 14,800.70, 20,424.90 and 8,086.72 is: 11,159.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,800.70 : 20,424.90 = 8,086.72 : x
  2. Step 2: Convert to fraction form
    14,800.70/20,424.90 = 8,086.72/x
  3. Step 3: Cross multiply
    14,800.70x = 20,424.90 × 8,086.72
  4. Step 4: Simplify right side
    14,800.70x = 165,170,447.33
  5. Step 5: Solve for x
    x = 165,170,447.33/14,800.70
  6. Step 6: Final answer
    x = 11,159.64

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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.