Home / 19,422.91-29,128.20-8,326.63

Finding the Fourth Proportional to 19,422.91, 29,128.20 and 8,326.63

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Solution

The fourth proportional to 19,422.91, 29,128.20 and 8,326.63 is: 12,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,422.91 : 29,128.20 = 8,326.63 : x
  2. Step 2: Convert to fraction form
    19,422.91/29,128.20 = 8,326.63/x
  3. Step 3: Cross multiply
    19,422.91x = 29,128.20 × 8,326.63
  4. Step 4: Simplify right side
    19,422.91x = 242,539,743.97
  5. Step 5: Solve for x
    x = 242,539,743.97/19,422.91
  6. Step 6: Final answer
    x = 12,487.30

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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.