Home / 21,338.83-29,449.54-11,780.43

Finding the Fourth Proportional to 21,338.83, 29,449.54 and 11,780.43

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Solution

The fourth proportional to 21,338.83, 29,449.54 and 11,780.43 is: 16,258.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.83 : 29,449.54 = 11,780.43 : x
  2. Step 2: Convert to fraction form
    21,338.83/29,449.54 = 11,780.43/x
  3. Step 3: Cross multiply
    21,338.83x = 29,449.54 × 11,780.43
  4. Step 4: Simplify right side
    21,338.83x = 346,928,244.50
  5. Step 5: Solve for x
    x = 346,928,244.50/21,338.83
  6. Step 6: Final answer
    x = 16,258.07

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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.