Home / 21,285.91-29,375.90-11,854.54

Finding the Fourth Proportional to 21,285.91, 29,375.90 and 11,854.54

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Solution

The fourth proportional to 21,285.91, 29,375.90 and 11,854.54 is: 16,360.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.91 : 29,375.90 = 11,854.54 : x
  2. Step 2: Convert to fraction form
    21,285.91/29,375.90 = 11,854.54/x
  3. Step 3: Cross multiply
    21,285.91x = 29,375.90 × 11,854.54
  4. Step 4: Simplify right side
    21,285.91x = 348,237,781.59
  5. Step 5: Solve for x
    x = 348,237,781.59/21,285.91
  6. Step 6: Final answer
    x = 16,360.01

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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.