Home / 13,524.30-18,676.31-12,788.01

Finding the Fourth Proportional to 13,524.30, 18,676.31 and 12,788.01

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Solution

The fourth proportional to 13,524.30, 18,676.31 and 12,788.01 is: 17,659.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,524.30 : 18,676.31 = 12,788.01 : x
  2. Step 2: Convert to fraction form
    13,524.30/18,676.31 = 12,788.01/x
  3. Step 3: Cross multiply
    13,524.30x = 18,676.31 × 12,788.01
  4. Step 4: Simplify right side
    13,524.30x = 238,832,775.10
  5. Step 5: Solve for x
    x = 238,832,775.10/13,524.30
  6. Step 6: Final answer
    x = 17,659.53

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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.