Home / 19,820.39-29,709.77-6,668.19

Finding the Fourth Proportional to 19,820.39, 29,709.77 and 6,668.19

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Solution

The fourth proportional to 19,820.39, 29,709.77 and 6,668.19 is: 9,995.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.39 : 29,709.77 = 6,668.19 : x
  2. Step 2: Convert to fraction form
    19,820.39/29,709.77 = 6,668.19/x
  3. Step 3: Cross multiply
    19,820.39x = 29,709.77 × 6,668.19
  4. Step 4: Simplify right side
    19,820.39x = 198,110,357.88
  5. Step 5: Solve for x
    x = 198,110,357.88/19,820.39
  6. Step 6: Final answer
    x = 9,995.28

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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.