Home / 19,780.35-29,670.83-6,453.29

Finding the Fourth Proportional to 19,780.35, 29,670.83 and 6,453.29

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Solution

The fourth proportional to 19,780.35, 29,670.83 and 6,453.29 is: 9,680.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.35 : 29,670.83 = 6,453.29 : x
  2. Step 2: Convert to fraction form
    19,780.35/29,670.83 = 6,453.29/x
  3. Step 3: Cross multiply
    19,780.35x = 29,670.83 × 6,453.29
  4. Step 4: Simplify right side
    19,780.35x = 191,474,289.91
  5. Step 5: Solve for x
    x = 191,474,289.91/19,780.35
  6. Step 6: Final answer
    x = 9,680.03

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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.