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Finding the Fourth Proportional to 18,553.66, 27,780.27 and 13,585.66

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Solution

The fourth proportional to 18,553.66, 27,780.27 and 13,585.66 is: 20,341.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,553.66 : 27,780.27 = 13,585.66 : x
  2. Step 2: Convert to fraction form
    18,553.66/27,780.27 = 13,585.66/x
  3. Step 3: Cross multiply
    18,553.66x = 27,780.27 × 13,585.66
  4. Step 4: Simplify right side
    18,553.66x = 377,413,302.93
  5. Step 5: Solve for x
    x = 377,413,302.93/18,553.66
  6. Step 6: Final answer
    x = 20,341.72

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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.