Home / 13,653.20-20,479.68-3,792.48

Finding the Fourth Proportional to 13,653.20, 20,479.68 and 3,792.48

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Solution

The fourth proportional to 13,653.20, 20,479.68 and 3,792.48 is: 5,688.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.20 : 20,479.68 = 3,792.48 : x
  2. Step 2: Convert to fraction form
    13,653.20/20,479.68 = 3,792.48/x
  3. Step 3: Cross multiply
    13,653.20x = 20,479.68 × 3,792.48
  4. Step 4: Simplify right side
    13,653.20x = 77,668,776.81
  5. Step 5: Solve for x
    x = 77,668,776.81/13,653.20
  6. Step 6: Final answer
    x = 5,688.69

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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.