Home / 21,380.18-29,504.69-11,948.74

Finding the Fourth Proportional to 21,380.18, 29,504.69 and 11,948.74

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Solution

The fourth proportional to 21,380.18, 29,504.69 and 11,948.74 is: 16,489.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.18 : 29,504.69 = 11,948.74 : x
  2. Step 2: Convert to fraction form
    21,380.18/29,504.69 = 11,948.74/x
  3. Step 3: Cross multiply
    21,380.18x = 29,504.69 × 11,948.74
  4. Step 4: Simplify right side
    21,380.18x = 352,543,736.09
  5. Step 5: Solve for x
    x = 352,543,736.09/21,380.18
  6. Step 6: Final answer
    x = 16,489.28

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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.