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Finding the Fourth Proportional to 18,303.55, 27,400.65 and 10,904.20

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Solution

The fourth proportional to 18,303.55, 27,400.65 and 10,904.20 is: 16,323.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.55 : 27,400.65 = 10,904.20 : x
  2. Step 2: Convert to fraction form
    18,303.55/27,400.65 = 10,904.20/x
  3. Step 3: Cross multiply
    18,303.55x = 27,400.65 × 10,904.20
  4. Step 4: Simplify right side
    18,303.55x = 298,782,167.73
  5. Step 5: Solve for x
    x = 298,782,167.73/18,303.55
  6. Step 6: Final answer
    x = 16,323.73

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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.