Home / 20,235.17-30,149.30-19,103.39

Finding the Fourth Proportional to 20,235.17, 30,149.30 and 19,103.39

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Solution

The fourth proportional to 20,235.17, 30,149.30 and 19,103.39 is: 28,463.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.17 : 30,149.30 = 19,103.39 : x
  2. Step 2: Convert to fraction form
    20,235.17/30,149.30 = 19,103.39/x
  3. Step 3: Cross multiply
    20,235.17x = 30,149.30 × 19,103.39
  4. Step 4: Simplify right side
    20,235.17x = 575,953,815.98
  5. Step 5: Solve for x
    x = 575,953,815.98/20,235.17
  6. Step 6: Final answer
    x = 28,463.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.