Home / 12,405.45-17,119.83-7,101.99

Finding the Fourth Proportional to 12,405.45, 17,119.83 and 7,101.99

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Solution

The fourth proportional to 12,405.45, 17,119.83 and 7,101.99 is: 9,800.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.45 : 17,119.83 = 7,101.99 : x
  2. Step 2: Convert to fraction form
    12,405.45/17,119.83 = 7,101.99/x
  3. Step 3: Cross multiply
    12,405.45x = 17,119.83 × 7,101.99
  4. Step 4: Simplify right side
    12,405.45x = 121,584,861.46
  5. Step 5: Solve for x
    x = 121,584,861.46/12,405.45
  6. Step 6: Final answer
    x = 9,800.92

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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.