Home / 19,487.80-29,236.50-5,638.20

Finding the Fourth Proportional to 19,487.80, 29,236.50 and 5,638.20

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Solution

The fourth proportional to 19,487.80, 29,236.50 and 5,638.20 is: 8,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,487.80 : 29,236.50 = 5,638.20 : x
  2. Step 2: Convert to fraction form
    19,487.80/29,236.50 = 5,638.20/x
  3. Step 3: Cross multiply
    19,487.80x = 29,236.50 × 5,638.20
  4. Step 4: Simplify right side
    19,487.80x = 164,841,234.30
  5. Step 5: Solve for x
    x = 164,841,234.30/19,487.80
  6. Step 6: Final answer
    x = 8,458.69

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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.