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Finding the Fourth Proportional to 18,376.96, 27,543.56 and 12,800.10

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Solution

The fourth proportional to 18,376.96, 27,543.56 and 12,800.10 is: 19,184.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376.96 : 27,543.56 = 12,800.10 : x
  2. Step 2: Convert to fraction form
    18,376.96/27,543.56 = 12,800.10/x
  3. Step 3: Cross multiply
    18,376.96x = 27,543.56 × 12,800.10
  4. Step 4: Simplify right side
    18,376.96x = 352,560,322.36
  5. Step 5: Solve for x
    x = 352,560,322.36/18,376.96
  6. Step 6: Final answer
    x = 19,184.91

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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.