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Finding the Fourth Proportional to 18,037.20, 27,007.20 and 14,116.80

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Solution

The fourth proportional to 18,037.20, 27,007.20 and 14,116.80 is: 21,137.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,037.20 : 27,007.20 = 14,116.80 : x
  2. Step 2: Convert to fraction form
    18,037.20/27,007.20 = 14,116.80/x
  3. Step 3: Cross multiply
    18,037.20x = 27,007.20 × 14,116.80
  4. Step 4: Simplify right side
    18,037.20x = 381,255,240.96
  5. Step 5: Solve for x
    x = 381,255,240.96/18,037.20
  6. Step 6: Final answer
    x = 21,137.16

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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.