Home / 21,385.60-29,511.96-11,954.08

Finding the Fourth Proportional to 21,385.60, 29,511.96 and 11,954.08

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Solution

The fourth proportional to 21,385.60, 29,511.96 and 11,954.08 is: 16,496.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.60 : 29,511.96 = 11,954.08 : x
  2. Step 2: Convert to fraction form
    21,385.60/29,511.96 = 11,954.08/x
  3. Step 3: Cross multiply
    21,385.60x = 29,511.96 × 11,954.08
  4. Step 4: Simplify right side
    21,385.60x = 352,788,330.80
  5. Step 5: Solve for x
    x = 352,788,330.80/21,385.60
  6. Step 6: Final answer
    x = 16,496.54

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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.