Home / 19,778.85-29,668.58-6,451.79

Finding the Fourth Proportional to 19,778.85, 29,668.58 and 6,451.79

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Solution

The fourth proportional to 19,778.85, 29,668.58 and 6,451.79 is: 9,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.85 : 29,668.58 = 6,451.79 : x
  2. Step 2: Convert to fraction form
    19,778.85/29,668.58 = 6,451.79/x
  3. Step 3: Cross multiply
    19,778.85x = 29,668.58 × 6,451.79
  4. Step 4: Simplify right side
    19,778.85x = 191,415,267.16
  5. Step 5: Solve for x
    x = 191,415,267.16/19,778.85
  6. Step 6: Final answer
    x = 9,677.78

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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.