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Finding the Fourth Proportional to 19,969.81, 27,559.78 and 11,473.31

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Solution

The fourth proportional to 19,969.81, 27,559.78 and 11,473.31 is: 15,834.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.81 : 27,559.78 = 11,473.31 : x
  2. Step 2: Convert to fraction form
    19,969.81/27,559.78 = 11,473.31/x
  3. Step 3: Cross multiply
    19,969.81x = 27,559.78 × 11,473.31
  4. Step 4: Simplify right side
    19,969.81x = 316,201,939.69
  5. Step 5: Solve for x
    x = 316,201,939.69/19,969.81
  6. Step 6: Final answer
    x = 15,834.00

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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.