Home / 19,821.80-29,732.70-13,226.60

Finding the Fourth Proportional to 19,821.80, 29,732.70 and 13,226.60

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Solution

The fourth proportional to 19,821.80, 29,732.70 and 13,226.60 is: 19,839.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.80 : 29,732.70 = 13,226.60 : x
  2. Step 2: Convert to fraction form
    19,821.80/29,732.70 = 13,226.60/x
  3. Step 3: Cross multiply
    19,821.80x = 29,732.70 × 13,226.60
  4. Step 4: Simplify right side
    19,821.80x = 393,262,529.82
  5. Step 5: Solve for x
    x = 393,262,529.82/19,821.80
  6. Step 6: Final answer
    x = 19,839.90

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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.