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Finding the Fourth Proportional to 14,762.86, 20,372.02 and 8,388.62

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Solution

The fourth proportional to 14,762.86, 20,372.02 and 8,388.62 is: 11,575.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,762.86 : 20,372.02 = 8,388.62 : x
  2. Step 2: Convert to fraction form
    14,762.86/20,372.02 = 8,388.62/x
  3. Step 3: Cross multiply
    14,762.86x = 20,372.02 × 8,388.62
  4. Step 4: Simplify right side
    14,762.86x = 170,893,134.41
  5. Step 5: Solve for x
    x = 170,893,134.41/14,762.86
  6. Step 6: Final answer
    x = 11,575.88

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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.