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Finding the Fourth Proportional to 19,619.80, 29,444.10 and 13,043.80

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Solution

The fourth proportional to 19,619.80, 29,444.10 and 13,043.80 is: 19,575.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.80 : 29,444.10 = 13,043.80 : x
  2. Step 2: Convert to fraction form
    19,619.80/29,444.10 = 13,043.80/x
  3. Step 3: Cross multiply
    19,619.80x = 29,444.10 × 13,043.80
  4. Step 4: Simplify right side
    19,619.80x = 384,062,951.58
  5. Step 5: Solve for x
    x = 384,062,951.58/19,619.80
  6. Step 6: Final answer
    x = 19,575.27

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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.