Home / 13,618.32-20,428.20-4,384.56

Finding the Fourth Proportional to 13,618.32, 20,428.20 and 4,384.56

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Solution

The fourth proportional to 13,618.32, 20,428.20 and 4,384.56 is: 6,577.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.32 : 20,428.20 = 4,384.56 : x
  2. Step 2: Convert to fraction form
    13,618.32/20,428.20 = 4,384.56/x
  3. Step 3: Cross multiply
    13,618.32x = 20,428.20 × 4,384.56
  4. Step 4: Simplify right side
    13,618.32x = 89,568,668.59
  5. Step 5: Solve for x
    x = 89,568,668.59/13,618.32
  6. Step 6: Final answer
    x = 6,577.07

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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.