Home / 21,273.68-29,356.41-12,320.54

Finding the Fourth Proportional to 21,273.68, 29,356.41 and 12,320.54

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Solution

The fourth proportional to 21,273.68, 29,356.41 and 12,320.54 is: 17,001.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.68 : 29,356.41 = 12,320.54 : x
  2. Step 2: Convert to fraction form
    21,273.68/29,356.41 = 12,320.54/x
  3. Step 3: Cross multiply
    21,273.68x = 29,356.41 × 12,320.54
  4. Step 4: Simplify right side
    21,273.68x = 361,686,676.88
  5. Step 5: Solve for x
    x = 361,686,676.88/21,273.68
  6. Step 6: Final answer
    x = 17,001.61

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1.5x scale

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.