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Finding the Fourth Proportional to 18,555.66, 27,783.26 and 13,587.66

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Solution

The fourth proportional to 18,555.66, 27,783.26 and 13,587.66 is: 20,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.66 : 27,783.26 = 13,587.66 : x
  2. Step 2: Convert to fraction form
    18,555.66/27,783.26 = 13,587.66/x
  3. Step 3: Cross multiply
    18,555.66x = 27,783.26 × 13,587.66
  4. Step 4: Simplify right side
    18,555.66x = 377,509,490.57
  5. Step 5: Solve for x
    x = 377,509,490.57/18,555.66
  6. Step 6: Final answer
    x = 20,344.71

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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.