Home / 19,871.51-27,422.48-10,918.82

Finding the Fourth Proportional to 19,871.51, 27,422.48 and 10,918.82

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Solution

The fourth proportional to 19,871.51, 27,422.48 and 10,918.82 is: 15,067.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.51 : 27,422.48 = 10,918.82 : x
  2. Step 2: Convert to fraction form
    19,871.51/27,422.48 = 10,918.82/x
  3. Step 3: Cross multiply
    19,871.51x = 27,422.48 × 10,918.82
  4. Step 4: Simplify right side
    19,871.51x = 299,420,985.96
  5. Step 5: Solve for x
    x = 299,420,985.96/19,871.51
  6. Step 6: Final answer
    x = 15,067.86

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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.