Home / 19,778.69-29,660.90-6,628.04

Finding the Fourth Proportional to 19,778.69, 29,660.90 and 6,628.04

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Solution

The fourth proportional to 19,778.69, 29,660.90 and 6,628.04 is: 9,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.69 : 29,660.90 = 6,628.04 : x
  2. Step 2: Convert to fraction form
    19,778.69/29,660.90 = 6,628.04/x
  3. Step 3: Cross multiply
    19,778.69x = 29,660.90 × 6,628.04
  4. Step 4: Simplify right side
    19,778.69x = 196,593,450.19
  5. Step 5: Solve for x
    x = 196,593,450.19/19,778.69
  6. Step 6: Final answer
    x = 9,939.66

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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.