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Finding the Fourth Proportional to 14,774.58, 20,392.81 and 8,404.90

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Solution

The fourth proportional to 14,774.58, 20,392.81 and 8,404.90 is: 11,600.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,774.58 : 20,392.81 = 8,404.90 : x
  2. Step 2: Convert to fraction form
    14,774.58/20,392.81 = 8,404.90/x
  3. Step 3: Cross multiply
    14,774.58x = 20,392.81 × 8,404.90
  4. Step 4: Simplify right side
    14,774.58x = 171,399,456.77
  5. Step 5: Solve for x
    x = 171,399,456.77/14,774.58
  6. Step 6: Final answer
    x = 11,600.97

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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.