Home / 28,462.82-39,282.46-20,531.30

Finding the Fourth Proportional to 28,462.82, 39,282.46 and 20,531.30

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Solution

The fourth proportional to 28,462.82, 39,282.46 and 20,531.30 is: 28,335.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,462.82 : 39,282.46 = 20,531.30 : x
  2. Step 2: Convert to fraction form
    28,462.82/39,282.46 = 20,531.30/x
  3. Step 3: Cross multiply
    28,462.82x = 39,282.46 × 20,531.30
  4. Step 4: Simplify right side
    28,462.82x = 806,519,971.00
  5. Step 5: Solve for x
    x = 806,519,971.00/28,462.82
  6. Step 6: Final answer
    x = 28,335.91

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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.