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Finding the Fourth Proportional to 18,387.29, 27,580.94 and 4,536.29

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Solution

The fourth proportional to 18,387.29, 27,580.94 and 4,536.29 is: 6,804.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.29 : 27,580.94 = 4,536.29 : x
  2. Step 2: Convert to fraction form
    18,387.29/27,580.94 = 4,536.29/x
  3. Step 3: Cross multiply
    18,387.29x = 27,580.94 × 4,536.29
  4. Step 4: Simplify right side
    18,387.29x = 125,114,981.73
  5. Step 5: Solve for x
    x = 125,114,981.73/18,387.29
  6. Step 6: Final answer
    x = 6,804.43

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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.