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Finding the Fourth Proportional to 27,380.87, 37,785.62 and 14,805.62

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Solution

The fourth proportional to 27,380.87, 37,785.62 and 14,805.62 is: 20,431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,380.87 : 37,785.62 = 14,805.62 : x
  2. Step 2: Convert to fraction form
    27,380.87/37,785.62 = 14,805.62/x
  3. Step 3: Cross multiply
    27,380.87x = 37,785.62 × 14,805.62
  4. Step 4: Simplify right side
    27,380.87x = 559,439,531.18
  5. Step 5: Solve for x
    x = 559,439,531.18/27,380.87
  6. Step 6: Final answer
    x = 20,431.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.