Home / 23,139.72-34,751.96-21,187.82

Finding the Fourth Proportional to 23,139.72, 34,751.96 and 21,187.82

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Solution

The fourth proportional to 23,139.72, 34,751.96 and 21,187.82 is: 31,820.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,139.72 : 34,751.96 = 21,187.82 : x
  2. Step 2: Convert to fraction form
    23,139.72/34,751.96 = 21,187.82/x
  3. Step 3: Cross multiply
    23,139.72x = 34,751.96 × 21,187.82
  4. Step 4: Simplify right side
    23,139.72x = 736,318,273.13
  5. Step 5: Solve for x
    x = 736,318,273.13/23,139.72
  6. Step 6: Final answer
    x = 31,820.54

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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.