Home / 18,871.82-26,038.35-12,579.98

Finding the Fourth Proportional to 18,871.82, 26,038.35 and 12,579.98

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Solution

The fourth proportional to 18,871.82, 26,038.35 and 12,579.98 is: 17,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.82 : 26,038.35 = 12,579.98 : x
  2. Step 2: Convert to fraction form
    18,871.82/26,038.35 = 12,579.98/x
  3. Step 3: Cross multiply
    18,871.82x = 26,038.35 × 12,579.98
  4. Step 4: Simplify right side
    18,871.82x = 327,561,922.23
  5. Step 5: Solve for x
    x = 327,561,922.23/18,871.82
  6. Step 6: Final answer
    x = 17,357.20

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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.