Home / 13,678.75-20,519.13-4,913.74

Finding the Fourth Proportional to 13,678.75, 20,519.13 and 4,913.74

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Solution

The fourth proportional to 13,678.75, 20,519.13 and 4,913.74 is: 7,370.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.75 : 20,519.13 = 4,913.74 : x
  2. Step 2: Convert to fraction form
    13,678.75/20,519.13 = 4,913.74/x
  3. Step 3: Cross multiply
    13,678.75x = 20,519.13 × 4,913.74
  4. Step 4: Simplify right side
    13,678.75x = 100,825,618.55
  5. Step 5: Solve for x
    x = 100,825,618.55/13,678.75
  6. Step 6: Final answer
    x = 7,370.97

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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.