Home / 18,709.85-28,069.38-5,562.21

Finding the Fourth Proportional to 18,709.85, 28,069.38 and 5,562.21

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Solution

The fourth proportional to 18,709.85, 28,069.38 and 5,562.21 is: 8,344.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.85 : 28,069.38 = 5,562.21 : x
  2. Step 2: Convert to fraction form
    18,709.85/28,069.38 = 5,562.21/x
  3. Step 3: Cross multiply
    18,709.85x = 28,069.38 × 5,562.21
  4. Step 4: Simplify right side
    18,709.85x = 156,127,786.13
  5. Step 5: Solve for x
    x = 156,127,786.13/18,709.85
  6. Step 6: Final answer
    x = 8,344.69

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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.