Home / 10,145.96-15,221.60-3,571.16

Finding the Fourth Proportional to 10,145.96, 15,221.60 and 3,571.16

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Solution

The fourth proportional to 10,145.96, 15,221.60 and 3,571.16 is: 5,357.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.96 : 15,221.60 = 3,571.16 : x
  2. Step 2: Convert to fraction form
    10,145.96/15,221.60 = 3,571.16/x
  3. Step 3: Cross multiply
    10,145.96x = 15,221.60 × 3,571.16
  4. Step 4: Simplify right side
    10,145.96x = 54,358,769.06
  5. Step 5: Solve for x
    x = 54,358,769.06/10,145.96
  6. Step 6: Final answer
    x = 5,357.68

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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.