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Finding the Fourth Proportional to 27,415.80, 41,037.30 and 19,639.80

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Solution

The fourth proportional to 27,415.80, 41,037.30 and 19,639.80 is: 29,397.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,415.80 : 41,037.30 = 19,639.80 : x
  2. Step 2: Convert to fraction form
    27,415.80/41,037.30 = 19,639.80/x
  3. Step 3: Cross multiply
    27,415.80x = 41,037.30 × 19,639.80
  4. Step 4: Simplify right side
    27,415.80x = 805,964,364.54
  5. Step 5: Solve for x
    x = 805,964,364.54/27,415.80
  6. Step 6: Final answer
    x = 29,397.81

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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.