Home / 19,900.20-29,860.74-8,814.54

Finding the Fourth Proportional to 19,900.20, 29,860.74 and 8,814.54

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Solution

The fourth proportional to 19,900.20, 29,860.74 and 8,814.54 is: 13,226.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.20 : 29,860.74 = 8,814.54 : x
  2. Step 2: Convert to fraction form
    19,900.20/29,860.74 = 8,814.54/x
  3. Step 3: Cross multiply
    19,900.20x = 29,860.74 × 8,814.54
  4. Step 4: Simplify right side
    19,900.20x = 263,208,687.16
  5. Step 5: Solve for x
    x = 263,208,687.16/19,900.20
  6. Step 6: Final answer
    x = 13,226.43

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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.