Home / 20,135.08-30,203.31-5,345.50

Finding the Fourth Proportional to 20,135.08, 30,203.31 and 5,345.50

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Solution

The fourth proportional to 20,135.08, 30,203.31 and 5,345.50 is: 8,018.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.08 : 30,203.31 = 5,345.50 : x
  2. Step 2: Convert to fraction form
    20,135.08/30,203.31 = 5,345.50/x
  3. Step 3: Cross multiply
    20,135.08x = 30,203.31 × 5,345.50
  4. Step 4: Simplify right side
    20,135.08x = 161,451,793.61
  5. Step 5: Solve for x
    x = 161,451,793.61/20,135.08
  6. Step 6: Final answer
    x = 8,018.43

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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.