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Finding the Fourth Proportional to 18,957.87, 28,453.95 and 9,604.35

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Solution

The fourth proportional to 18,957.87, 28,453.95 and 9,604.35 is: 14,415.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.87 : 28,453.95 = 9,604.35 : x
  2. Step 2: Convert to fraction form
    18,957.87/28,453.95 = 9,604.35/x
  3. Step 3: Cross multiply
    18,957.87x = 28,453.95 × 9,604.35
  4. Step 4: Simplify right side
    18,957.87x = 273,281,694.68
  5. Step 5: Solve for x
    x = 273,281,694.68/18,957.87
  6. Step 6: Final answer
    x = 14,415.21

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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.