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Finding the Fourth Proportional to 12,554.21, 18,847.71 and 10,618.71

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Solution

The fourth proportional to 12,554.21, 18,847.71 and 10,618.71 is: 15,941.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,554.21 : 18,847.71 = 10,618.71 : x
  2. Step 2: Convert to fraction form
    12,554.21/18,847.71 = 10,618.71/x
  3. Step 3: Cross multiply
    12,554.21x = 18,847.71 × 10,618.71
  4. Step 4: Simplify right side
    12,554.21x = 200,138,366.65
  5. Step 5: Solve for x
    x = 200,138,366.65/12,554.21
  6. Step 6: Final answer
    x = 15,941.94

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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.