Home / 13,257.25-19,885.86-8,330.33

Finding the Fourth Proportional to 13,257.25, 19,885.86 and 8,330.33

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Solution

The fourth proportional to 13,257.25, 19,885.86 and 8,330.33 is: 12,495.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.25 : 19,885.86 = 8,330.33 : x
  2. Step 2: Convert to fraction form
    13,257.25/19,885.86 = 8,330.33/x
  3. Step 3: Cross multiply
    13,257.25x = 19,885.86 × 8,330.33
  4. Step 4: Simplify right side
    13,257.25x = 165,655,825.85
  5. Step 5: Solve for x
    x = 165,655,825.85/13,257.25
  6. Step 6: Final answer
    x = 12,495.49

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.