Home / 19,890.45-29,839.31-8,204.58

Finding the Fourth Proportional to 19,890.45, 29,839.31 and 8,204.58

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Solution

The fourth proportional to 19,890.45, 29,839.31 and 8,204.58 is: 12,308.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.45 : 29,839.31 = 8,204.58 : x
  2. Step 2: Convert to fraction form
    19,890.45/29,839.31 = 8,204.58/x
  3. Step 3: Cross multiply
    19,890.45x = 29,839.31 × 8,204.58
  4. Step 4: Simplify right side
    19,890.45x = 244,818,965.02
  5. Step 5: Solve for x
    x = 244,818,965.02/19,890.45
  6. Step 6: Final answer
    x = 12,308.37

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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.