Home / 28,959.48-39,982.68-19,899.90

Finding the Fourth Proportional to 28,959.48, 39,982.68 and 19,899.90

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Solution

The fourth proportional to 28,959.48, 39,982.68 and 19,899.90 is: 27,474.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,959.48 : 39,982.68 = 19,899.90 : x
  2. Step 2: Convert to fraction form
    28,959.48/39,982.68 = 19,899.90/x
  3. Step 3: Cross multiply
    28,959.48x = 39,982.68 × 19,899.90
  4. Step 4: Simplify right side
    28,959.48x = 795,651,333.73
  5. Step 5: Solve for x
    x = 795,651,333.73/28,959.48
  6. Step 6: Final answer
    x = 27,474.64

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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.