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Finding the Fourth Proportional to 14,970.92, 20,659.59 and 8,257.16

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Solution

The fourth proportional to 14,970.92, 20,659.59 and 8,257.16 is: 11,394.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,970.92 : 20,659.59 = 8,257.16 : x
  2. Step 2: Convert to fraction form
    14,970.92/20,659.59 = 8,257.16/x
  3. Step 3: Cross multiply
    14,970.92x = 20,659.59 × 8,257.16
  4. Step 4: Simplify right side
    14,970.92x = 170,589,540.16
  5. Step 5: Solve for x
    x = 170,589,540.16/14,970.92
  6. Step 6: Final answer
    x = 11,394.73

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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.