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Finding the Fourth Proportional to 14,609.54, 20,162.39 and 8,479.34

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Solution

The fourth proportional to 14,609.54, 20,162.39 and 8,479.34 is: 11,702.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,609.54 : 20,162.39 = 8,479.34 : x
  2. Step 2: Convert to fraction form
    14,609.54/20,162.39 = 8,479.34/x
  3. Step 3: Cross multiply
    14,609.54x = 20,162.39 × 8,479.34
  4. Step 4: Simplify right side
    14,609.54x = 170,963,616.81
  5. Step 5: Solve for x
    x = 170,963,616.81/14,609.54
  6. Step 6: Final answer
    x = 11,702.19

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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.