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Finding the Fourth Proportional to 14,679.92, 20,260.32 and 8,392.16

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Solution

The fourth proportional to 14,679.92, 20,260.32 and 8,392.16 is: 11,582.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.92 : 20,260.32 = 8,392.16 : x
  2. Step 2: Convert to fraction form
    14,679.92/20,260.32 = 8,392.16/x
  3. Step 3: Cross multiply
    14,679.92x = 20,260.32 × 8,392.16
  4. Step 4: Simplify right side
    14,679.92x = 170,027,847.09
  5. Step 5: Solve for x
    x = 170,027,847.09/14,679.92
  6. Step 6: Final answer
    x = 11,582.34

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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.