Home / 14,818.61-20,449.69-8,104.21

Finding the Fourth Proportional to 14,818.61, 20,449.69 and 8,104.21

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Solution

The fourth proportional to 14,818.61, 20,449.69 and 8,104.21 is: 11,183.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,818.61 : 20,449.69 = 8,104.21 : x
  2. Step 2: Convert to fraction form
    14,818.61/20,449.69 = 8,104.21/x
  3. Step 3: Cross multiply
    14,818.61x = 20,449.69 × 8,104.21
  4. Step 4: Simplify right side
    14,818.61x = 165,728,510.81
  5. Step 5: Solve for x
    x = 165,728,510.81/14,818.61
  6. Step 6: Final answer
    x = 11,183.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.