Home / 19,780.25-29,642.69-11,458.04

Finding the Fourth Proportional to 19,780.25, 29,642.69 and 11,458.04

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Solution

The fourth proportional to 19,780.25, 29,642.69 and 11,458.04 is: 17,171.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.25 : 29,642.69 = 11,458.04 : x
  2. Step 2: Convert to fraction form
    19,780.25/29,642.69 = 11,458.04/x
  3. Step 3: Cross multiply
    19,780.25x = 29,642.69 × 11,458.04
  4. Step 4: Simplify right side
    19,780.25x = 339,647,008.16
  5. Step 5: Solve for x
    x = 339,647,008.16/19,780.25
  6. Step 6: Final answer
    x = 17,171.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.