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Finding the Fourth Proportional to 18,689.35, 28,033.41 and 7,592.76

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Solution

The fourth proportional to 18,689.35, 28,033.41 and 7,592.76 is: 11,388.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.35 : 28,033.41 = 7,592.76 : x
  2. Step 2: Convert to fraction form
    18,689.35/28,033.41 = 7,592.76/x
  3. Step 3: Cross multiply
    18,689.35x = 28,033.41 × 7,592.76
  4. Step 4: Simplify right side
    18,689.35x = 212,850,954.11
  5. Step 5: Solve for x
    x = 212,850,954.11/18,689.35
  6. Step 6: Final answer
    x = 11,388.89

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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.