Home / 13,189.76-19,784.64-3,954.56

Finding the Fourth Proportional to 13,189.76, 19,784.64 and 3,954.56

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Solution

The fourth proportional to 13,189.76, 19,784.64 and 3,954.56 is: 5,931.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.76 : 19,784.64 = 3,954.56 : x
  2. Step 2: Convert to fraction form
    13,189.76/19,784.64 = 3,954.56/x
  3. Step 3: Cross multiply
    13,189.76x = 19,784.64 × 3,954.56
  4. Step 4: Simplify right side
    13,189.76x = 78,239,545.96
  5. Step 5: Solve for x
    x = 78,239,545.96/13,189.76
  6. Step 6: Final answer
    x = 5,931.84

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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.