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Finding the Fourth Proportional to 14,951.69, 20,632.35 and 8,979.81

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Solution

The fourth proportional to 14,951.69, 20,632.35 and 8,979.81 is: 12,391.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,951.69 : 20,632.35 = 8,979.81 : x
  2. Step 2: Convert to fraction form
    14,951.69/20,632.35 = 8,979.81/x
  3. Step 3: Cross multiply
    14,951.69x = 20,632.35 × 8,979.81
  4. Step 4: Simplify right side
    14,951.69x = 185,274,537.95
  5. Step 5: Solve for x
    x = 185,274,537.95/14,951.69
  6. Step 6: Final answer
    x = 12,391.54

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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.