Home / 19,668.11-29,502.05-8,421.75

Finding the Fourth Proportional to 19,668.11, 29,502.05 and 8,421.75

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Solution

The fourth proportional to 19,668.11, 29,502.05 and 8,421.75 is: 12,632.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668.11 : 29,502.05 = 8,421.75 : x
  2. Step 2: Convert to fraction form
    19,668.11/29,502.05 = 8,421.75/x
  3. Step 3: Cross multiply
    19,668.11x = 29,502.05 × 8,421.75
  4. Step 4: Simplify right side
    19,668.11x = 248,458,847.48
  5. Step 5: Solve for x
    x = 248,458,847.48/19,668.11
  6. Step 6: Final answer
    x = 12,632.58

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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.