Home / 18,682.20-28,031.40-8,816.40

Finding the Fourth Proportional to 18,682.20, 28,031.40 and 8,816.40

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Solution

The fourth proportional to 18,682.20, 28,031.40 and 8,816.40 is: 13,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.20 : 28,031.40 = 8,816.40 : x
  2. Step 2: Convert to fraction form
    18,682.20/28,031.40 = 8,816.40/x
  3. Step 3: Cross multiply
    18,682.20x = 28,031.40 × 8,816.40
  4. Step 4: Simplify right side
    18,682.20x = 247,136,034.96
  5. Step 5: Solve for x
    x = 247,136,034.96/18,682.20
  6. Step 6: Final answer
    x = 13,228.42

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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.