Home / 20,725.89-28,601.94-11,294.45

Finding the Fourth Proportional to 20,725.89, 28,601.94 and 11,294.45

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Solution

The fourth proportional to 20,725.89, 28,601.94 and 11,294.45 is: 15,586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.89 : 28,601.94 = 11,294.45 : x
  2. Step 2: Convert to fraction form
    20,725.89/28,601.94 = 11,294.45/x
  3. Step 3: Cross multiply
    20,725.89x = 28,601.94 × 11,294.45
  4. Step 4: Simplify right side
    20,725.89x = 323,043,038.22
  5. Step 5: Solve for x
    x = 323,043,038.22/20,725.89
  6. Step 6: Final answer
    x = 15,586.45

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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.