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Finding the Fourth Proportional to 14,039.92, 21,063.12 and 7,472.44

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Solution

The fourth proportional to 14,039.92, 21,063.12 and 7,472.44 is: 11,210.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,039.92 : 21,063.12 = 7,472.44 : x
  2. Step 2: Convert to fraction form
    14,039.92/21,063.12 = 7,472.44/x
  3. Step 3: Cross multiply
    14,039.92x = 21,063.12 × 7,472.44
  4. Step 4: Simplify right side
    14,039.92x = 157,392,900.41
  5. Step 5: Solve for x
    x = 157,392,900.41/14,039.92
  6. Step 6: Final answer
    x = 11,210.38

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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.