Home / 19,491.80-29,235.87-5,453.09

Finding the Fourth Proportional to 19,491.80, 29,235.87 and 5,453.09

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Solution

The fourth proportional to 19,491.80, 29,235.87 and 5,453.09 is: 8,179.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.80 : 29,235.87 = 5,453.09 : x
  2. Step 2: Convert to fraction form
    19,491.80/29,235.87 = 5,453.09/x
  3. Step 3: Cross multiply
    19,491.80x = 29,235.87 × 5,453.09
  4. Step 4: Simplify right side
    19,491.80x = 159,425,684.16
  5. Step 5: Solve for x
    x = 159,425,684.16/19,491.80
  6. Step 6: Final answer
    x = 8,179.12

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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.