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Finding the Fourth Proportional to 18,672.90, 28,009.33 and 10,876.24

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Solution

The fourth proportional to 18,672.90, 28,009.33 and 10,876.24 is: 16,314.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.90 : 28,009.33 = 10,876.24 : x
  2. Step 2: Convert to fraction form
    18,672.90/28,009.33 = 10,876.24/x
  3. Step 3: Cross multiply
    18,672.90x = 28,009.33 × 10,876.24
  4. Step 4: Simplify right side
    18,672.90x = 304,636,195.32
  5. Step 5: Solve for x
    x = 304,636,195.32/18,672.90
  6. Step 6: Final answer
    x = 16,314.35

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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.