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Finding the Fourth Proportional to 18,857.88, 28,296.57 and 10,532.70

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Solution

The fourth proportional to 18,857.88, 28,296.57 and 10,532.70 is: 15,804.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.88 : 28,296.57 = 10,532.70 : x
  2. Step 2: Convert to fraction form
    18,857.88/28,296.57 = 10,532.70/x
  3. Step 3: Cross multiply
    18,857.88x = 28,296.57 × 10,532.70
  4. Step 4: Simplify right side
    18,857.88x = 298,039,282.84
  5. Step 5: Solve for x
    x = 298,039,282.84/18,857.88
  6. Step 6: Final answer
    x = 15,804.50

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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.