Home / 12,017.28-18,029.81-5,777.78

Finding the Fourth Proportional to 12,017.28, 18,029.81 and 5,777.78

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Solution

The fourth proportional to 12,017.28, 18,029.81 and 5,777.78 is: 8,668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,017.28 : 18,029.81 = 5,777.78 : x
  2. Step 2: Convert to fraction form
    12,017.28/18,029.81 = 5,777.78/x
  3. Step 3: Cross multiply
    12,017.28x = 18,029.81 × 5,777.78
  4. Step 4: Simplify right side
    12,017.28x = 104,172,199.92
  5. Step 5: Solve for x
    x = 104,172,199.92/12,017.28
  6. Step 6: Final answer
    x = 8,668.53

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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.