Home / 11,145.12-16,719.60-4,578.72

Finding the Fourth Proportional to 11,145.12, 16,719.60 and 4,578.72

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Solution

The fourth proportional to 11,145.12, 16,719.60 and 4,578.72 is: 6,868.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.12 : 16,719.60 = 4,578.72 : x
  2. Step 2: Convert to fraction form
    11,145.12/16,719.60 = 4,578.72/x
  3. Step 3: Cross multiply
    11,145.12x = 16,719.60 × 4,578.72
  4. Step 4: Simplify right side
    11,145.12x = 76,554,366.91
  5. Step 5: Solve for x
    x = 76,554,366.91/11,145.12
  6. Step 6: Final answer
    x = 6,868.87

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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.