Home / 21,377.25-29,500.61-11,945.81

Finding the Fourth Proportional to 21,377.25, 29,500.61 and 11,945.81

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Solution

The fourth proportional to 21,377.25, 29,500.61 and 11,945.81 is: 16,485.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.25 : 29,500.61 = 11,945.81 : x
  2. Step 2: Convert to fraction form
    21,377.25/29,500.61 = 11,945.81/x
  3. Step 3: Cross multiply
    21,377.25x = 29,500.61 × 11,945.81
  4. Step 4: Simplify right side
    21,377.25x = 352,408,695.97
  5. Step 5: Solve for x
    x = 352,408,695.97/21,377.25
  6. Step 6: Final answer
    x = 16,485.22

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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.