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Finding the Fourth Proportional to 27,479.39, 37,905.37 and 16,861.50

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Solution

The fourth proportional to 27,479.39, 37,905.37 and 16,861.50 is: 23,258.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,479.39 : 37,905.37 = 16,861.50 : x
  2. Step 2: Convert to fraction form
    27,479.39/37,905.37 = 16,861.50/x
  3. Step 3: Cross multiply
    27,479.39x = 37,905.37 × 16,861.50
  4. Step 4: Simplify right side
    27,479.39x = 639,141,354.10
  5. Step 5: Solve for x
    x = 639,141,354.10/27,479.39
  6. Step 6: Final answer
    x = 23,258.94

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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.