Home / 23,129.80-34,638.78-13,239.10

Finding the Fourth Proportional to 23,129.80, 34,638.78 and 13,239.10

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Solution

The fourth proportional to 23,129.80, 34,638.78 and 13,239.10 is: 19,826.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.80 : 34,638.78 = 13,239.10 : x
  2. Step 2: Convert to fraction form
    23,129.80/34,638.78 = 13,239.10/x
  3. Step 3: Cross multiply
    23,129.80x = 34,638.78 × 13,239.10
  4. Step 4: Simplify right side
    23,129.80x = 458,586,272.30
  5. Step 5: Solve for x
    x = 458,586,272.30/23,129.80
  6. Step 6: Final answer
    x = 19,826.64

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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.