Home / 19,871.17-27,421.66-10,918.64

Finding the Fourth Proportional to 19,871.17, 27,421.66 and 10,918.64

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Solution

The fourth proportional to 19,871.17, 27,421.66 and 10,918.64 is: 15,067.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.17 : 27,421.66 = 10,918.64 : x
  2. Step 2: Convert to fraction form
    19,871.17/27,421.66 = 10,918.64/x
  3. Step 3: Cross multiply
    19,871.17x = 27,421.66 × 10,918.64
  4. Step 4: Simplify right side
    19,871.17x = 299,407,233.74
  5. Step 5: Solve for x
    x = 299,407,233.74/19,871.17
  6. Step 6: Final answer
    x = 15,067.42

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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.