Home / 18,487.20-27,730.80-16,409.55

Finding the Fourth Proportional to 18,487.20, 27,730.80 and 16,409.55

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Solution

The fourth proportional to 18,487.20, 27,730.80 and 16,409.55 is: 24,614.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.20 : 27,730.80 = 16,409.55 : x
  2. Step 2: Convert to fraction form
    18,487.20/27,730.80 = 16,409.55/x
  3. Step 3: Cross multiply
    18,487.20x = 27,730.80 × 16,409.55
  4. Step 4: Simplify right side
    18,487.20x = 455,049,949.14
  5. Step 5: Solve for x
    x = 455,049,949.14/18,487.20
  6. Step 6: Final answer
    x = 24,614.33

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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.