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Finding the Fourth Proportional to 16,390.80, 24,586.20 and 7,174.80

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Solution

The fourth proportional to 16,390.80, 24,586.20 and 7,174.80 is: 10,762.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.80 : 24,586.20 = 7,174.80 : x
  2. Step 2: Convert to fraction form
    16,390.80/24,586.20 = 7,174.80/x
  3. Step 3: Cross multiply
    16,390.80x = 24,586.20 × 7,174.80
  4. Step 4: Simplify right side
    16,390.80x = 176,401,067.76
  5. Step 5: Solve for x
    x = 176,401,067.76/16,390.80
  6. Step 6: Final answer
    x = 10,762.20

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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.