Home / 20,104.70-30,108.45-19,229.90

Finding the Fourth Proportional to 20,104.70, 30,108.45 and 19,229.90

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Solution

The fourth proportional to 20,104.70, 30,108.45 and 19,229.90 is: 28,798.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.70 : 30,108.45 = 19,229.90 : x
  2. Step 2: Convert to fraction form
    20,104.70/30,108.45 = 19,229.90/x
  3. Step 3: Cross multiply
    20,104.70x = 30,108.45 × 19,229.90
  4. Step 4: Simplify right side
    20,104.70x = 578,982,482.66
  5. Step 5: Solve for x
    x = 578,982,482.66/20,104.70
  6. Step 6: Final answer
    x = 28,798.36

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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.