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Finding the Fourth Proportional to 14,490.81, 20,000.43 and 8,827.43

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Solution

The fourth proportional to 14,490.81, 20,000.43 and 8,827.43 is: 12,183.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.81 : 20,000.43 = 8,827.43 : x
  2. Step 2: Convert to fraction form
    14,490.81/20,000.43 = 8,827.43/x
  3. Step 3: Cross multiply
    14,490.81x = 20,000.43 × 8,827.43
  4. Step 4: Simplify right side
    14,490.81x = 176,552,295.79
  5. Step 5: Solve for x
    x = 176,552,295.79/14,490.81
  6. Step 6: Final answer
    x = 12,183.74

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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.