Home / 15,849.39-21,871.97-8,679.23

Finding the Fourth Proportional to 15,849.39, 21,871.97 and 8,679.23

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Solution

The fourth proportional to 15,849.39, 21,871.97 and 8,679.23 is: 11,977.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,849.39 : 21,871.97 = 8,679.23 : x
  2. Step 2: Convert to fraction form
    15,849.39/21,871.97 = 8,679.23/x
  3. Step 3: Cross multiply
    15,849.39x = 21,871.97 × 8,679.23
  4. Step 4: Simplify right side
    15,849.39x = 189,831,869.47
  5. Step 5: Solve for x
    x = 189,831,869.47/15,849.39
  6. Step 6: Final answer
    x = 11,977.24

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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.