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Finding the Fourth Proportional to 20,649.80, 30,974.72 and 19,598.02

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Solution

The fourth proportional to 20,649.80, 30,974.72 and 19,598.02 is: 29,397.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.80 : 30,974.72 = 19,598.02 : x
  2. Step 2: Convert to fraction form
    20,649.80/30,974.72 = 19,598.02/x
  3. Step 3: Cross multiply
    20,649.80x = 30,974.72 × 19,598.02
  4. Step 4: Simplify right side
    20,649.80x = 607,043,006.63
  5. Step 5: Solve for x
    x = 607,043,006.63/20,649.80
  6. Step 6: Final answer
    x = 29,397.04

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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.