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Finding the Fourth Proportional to 27,311.31, 40,883.13 and 19,913.99

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Solution

The fourth proportional to 27,311.31, 40,883.13 and 19,913.99 is: 29,809.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,311.31 : 40,883.13 = 19,913.99 : x
  2. Step 2: Convert to fraction form
    27,311.31/40,883.13 = 19,913.99/x
  3. Step 3: Cross multiply
    27,311.31x = 40,883.13 × 19,913.99
  4. Step 4: Simplify right side
    27,311.31x = 814,146,037.57
  5. Step 5: Solve for x
    x = 814,146,037.57/27,311.31
  6. Step 6: Final answer
    x = 29,809.85

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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.