Home / 12,905.11-19,357.67-10,591.75

Finding the Fourth Proportional to 12,905.11, 19,357.67 and 10,591.75

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Solution

The fourth proportional to 12,905.11, 19,357.67 and 10,591.75 is: 15,887.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.11 : 19,357.67 = 10,591.75 : x
  2. Step 2: Convert to fraction form
    12,905.11/19,357.67 = 10,591.75/x
  3. Step 3: Cross multiply
    12,905.11x = 19,357.67 × 10,591.75
  4. Step 4: Simplify right side
    12,905.11x = 205,031,601.22
  5. Step 5: Solve for x
    x = 205,031,601.22/12,905.11
  6. Step 6: Final answer
    x = 15,887.63

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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.