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Finding the Fourth Proportional to 19,759.70, 27,268.79 and 10,807.79

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Solution

The fourth proportional to 19,759.70, 27,268.79 and 10,807.79 is: 14,914.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,759.70 : 27,268.79 = 10,807.79 : x
  2. Step 2: Convert to fraction form
    19,759.70/27,268.79 = 10,807.79/x
  3. Step 3: Cross multiply
    19,759.70x = 27,268.79 × 10,807.79
  4. Step 4: Simplify right side
    19,759.70x = 294,715,165.49
  5. Step 5: Solve for x
    x = 294,715,165.49/19,759.70
  6. Step 6: Final answer
    x = 14,914.96

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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.