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Finding the Fourth Proportional to 14,013.44, 20,989.44 and 8,529.92

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Solution

The fourth proportional to 14,013.44, 20,989.44 and 8,529.92 is: 12,776.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,013.44 : 20,989.44 = 8,529.92 : x
  2. Step 2: Convert to fraction form
    14,013.44/20,989.44 = 8,529.92/x
  3. Step 3: Cross multiply
    14,013.44x = 20,989.44 × 8,529.92
  4. Step 4: Simplify right side
    14,013.44x = 179,038,244.04
  5. Step 5: Solve for x
    x = 179,038,244.04/14,013.44
  6. Step 6: Final answer
    x = 12,776.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.