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Finding the Fourth Proportional to 18,543.81, 27,815.66 and 4,503.84

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Solution

The fourth proportional to 18,543.81, 27,815.66 and 4,503.84 is: 6,755.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,543.81 : 27,815.66 = 4,503.84 : x
  2. Step 2: Convert to fraction form
    18,543.81/27,815.66 = 4,503.84/x
  3. Step 3: Cross multiply
    18,543.81x = 27,815.66 × 4,503.84
  4. Step 4: Simplify right side
    18,543.81x = 125,277,259.62
  5. Step 5: Solve for x
    x = 125,277,259.62/18,543.81
  6. Step 6: Final answer
    x = 6,755.75

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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.