Home / 19,174.28-28,800.78-12,609.80

Finding the Fourth Proportional to 19,174.28, 28,800.78 and 12,609.80

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Solution

The fourth proportional to 19,174.28, 28,800.78 and 12,609.80 is: 18,940.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,174.28 : 28,800.78 = 12,609.80 : x
  2. Step 2: Convert to fraction form
    19,174.28/28,800.78 = 12,609.80/x
  3. Step 3: Cross multiply
    19,174.28x = 28,800.78 × 12,609.80
  4. Step 4: Simplify right side
    19,174.28x = 363,172,075.64
  5. Step 5: Solve for x
    x = 363,172,075.64/19,174.28
  6. Step 6: Final answer
    x = 18,940.58

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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.