Home / 20,345.70-30,520.42-6,305.82

Finding the Fourth Proportional to 20,345.70, 30,520.42 and 6,305.82

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Solution

The fourth proportional to 20,345.70, 30,520.42 and 6,305.82 is: 9,459.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.70 : 30,520.42 = 6,305.82 : x
  2. Step 2: Convert to fraction form
    20,345.70/30,520.42 = 6,305.82/x
  3. Step 3: Cross multiply
    20,345.70x = 30,520.42 × 6,305.82
  4. Step 4: Simplify right side
    20,345.70x = 192,456,274.84
  5. Step 5: Solve for x
    x = 192,456,274.84/20,345.70
  6. Step 6: Final answer
    x = 9,459.31

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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.