Home / 20,885.48-28,825.58-15,841.26

Finding the Fourth Proportional to 20,885.48, 28,825.58 and 15,841.26

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Solution

The fourth proportional to 20,885.48, 28,825.58 and 15,841.26 is: 21,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.48 : 28,825.58 = 15,841.26 : x
  2. Step 2: Convert to fraction form
    20,885.48/28,825.58 = 15,841.26/x
  3. Step 3: Cross multiply
    20,885.48x = 28,825.58 × 15,841.26
  4. Step 4: Simplify right side
    20,885.48x = 456,633,507.43
  5. Step 5: Solve for x
    x = 456,633,507.43/20,885.48
  6. Step 6: Final answer
    x = 21,863.68

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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.