Home / 20,862.25-28,790.58-11,431.42

Finding the Fourth Proportional to 20,862.25, 28,790.58 and 11,431.42

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Solution

The fourth proportional to 20,862.25, 28,790.58 and 11,431.42 is: 15,775.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.25 : 28,790.58 = 11,431.42 : x
  2. Step 2: Convert to fraction form
    20,862.25/28,790.58 = 11,431.42/x
  3. Step 3: Cross multiply
    20,862.25x = 28,790.58 × 11,431.42
  4. Step 4: Simplify right side
    20,862.25x = 329,117,212.02
  5. Step 5: Solve for x
    x = 329,117,212.02/20,862.25
  6. Step 6: Final answer
    x = 15,775.73

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.