Home / 15,227.58-21,015.11-8,513.09

Finding the Fourth Proportional to 15,227.58, 21,015.11 and 8,513.09

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Solution

The fourth proportional to 15,227.58, 21,015.11 and 8,513.09 is: 11,748.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.58 : 21,015.11 = 8,513.09 : x
  2. Step 2: Convert to fraction form
    15,227.58/21,015.11 = 8,513.09/x
  3. Step 3: Cross multiply
    15,227.58x = 21,015.11 × 8,513.09
  4. Step 4: Simplify right side
    15,227.58x = 178,903,522.79
  5. Step 5: Solve for x
    x = 178,903,522.79/15,227.58
  6. Step 6: Final answer
    x = 11,748.65

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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.