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Finding the Fourth Proportional to 14,711.92, 20,301.95 and 8,423.08

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Solution

The fourth proportional to 14,711.92, 20,301.95 and 8,423.08 is: 11,623.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,711.92 : 20,301.95 = 8,423.08 : x
  2. Step 2: Convert to fraction form
    14,711.92/20,301.95 = 8,423.08/x
  3. Step 3: Cross multiply
    14,711.92x = 20,301.95 × 8,423.08
  4. Step 4: Simplify right side
    14,711.92x = 171,004,949.01
  5. Step 5: Solve for x
    x = 171,004,949.01/14,711.92
  6. Step 6: Final answer
    x = 11,623.56

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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.