Home / 12,871.88-19,308.51-4,106.11

Finding the Fourth Proportional to 12,871.88, 19,308.51 and 4,106.11

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Solution

The fourth proportional to 12,871.88, 19,308.51 and 4,106.11 is: 6,159.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.88 : 19,308.51 = 4,106.11 : x
  2. Step 2: Convert to fraction form
    12,871.88/19,308.51 = 4,106.11/x
  3. Step 3: Cross multiply
    12,871.88x = 19,308.51 × 4,106.11
  4. Step 4: Simplify right side
    12,871.88x = 79,282,853.93
  5. Step 5: Solve for x
    x = 79,282,853.93/12,871.88
  6. Step 6: Final answer
    x = 6,159.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.