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Finding the Fourth Proportional to 18,673.61, 28,010.43 and 10,876.95

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Solution

The fourth proportional to 18,673.61, 28,010.43 and 10,876.95 is: 16,315.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.61 : 28,010.43 = 10,876.95 : x
  2. Step 2: Convert to fraction form
    18,673.61/28,010.43 = 10,876.95/x
  3. Step 3: Cross multiply
    18,673.61x = 28,010.43 × 10,876.95
  4. Step 4: Simplify right side
    18,673.61x = 304,668,046.59
  5. Step 5: Solve for x
    x = 304,668,046.59/18,673.61
  6. Step 6: Final answer
    x = 16,315.44

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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.