Home / 19,947.81-27,539.43-13,242.51

Finding the Fourth Proportional to 19,947.81, 27,539.43 and 13,242.51

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Solution

The fourth proportional to 19,947.81, 27,539.43 and 13,242.51 is: 18,282.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.81 : 27,539.43 = 13,242.51 : x
  2. Step 2: Convert to fraction form
    19,947.81/27,539.43 = 13,242.51/x
  3. Step 3: Cross multiply
    19,947.81x = 27,539.43 × 13,242.51
  4. Step 4: Simplify right side
    19,947.81x = 364,691,177.17
  5. Step 5: Solve for x
    x = 364,691,177.17/19,947.81
  6. Step 6: Final answer
    x = 18,282.27

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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.