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Finding the Fourth Proportional to 27,843.80, 41,765.10 and 18,543.40

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Solution

The fourth proportional to 27,843.80, 41,765.10 and 18,543.40 is: 27,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,843.80 : 41,765.10 = 18,543.40 : x
  2. Step 2: Convert to fraction form
    27,843.80/41,765.10 = 18,543.40/x
  3. Step 3: Cross multiply
    27,843.80x = 41,765.10 × 18,543.40
  4. Step 4: Simplify right side
    27,843.80x = 774,466,955.34
  5. Step 5: Solve for x
    x = 774,466,955.34/27,843.80
  6. Step 6: Final answer
    x = 27,814.70

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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.