Home / 10,147.68-15,218.28-3,220.56

Finding the Fourth Proportional to 10,147.68, 15,218.28 and 3,220.56

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Solution

The fourth proportional to 10,147.68, 15,218.28 and 3,220.56 is: 4,829.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.68 : 15,218.28 = 3,220.56 : x
  2. Step 2: Convert to fraction form
    10,147.68/15,218.28 = 3,220.56/x
  3. Step 3: Cross multiply
    10,147.68x = 15,218.28 × 3,220.56
  4. Step 4: Simplify right side
    10,147.68x = 49,011,383.84
  5. Step 5: Solve for x
    x = 49,011,383.84/10,147.68
  6. Step 6: Final answer
    x = 4,829.81

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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.