Home / 20,557.73-30,838.10-6,518.82

Finding the Fourth Proportional to 20,557.73, 30,838.10 and 6,518.82

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Solution

The fourth proportional to 20,557.73, 30,838.10 and 6,518.82 is: 9,778.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.73 : 30,838.10 = 6,518.82 : x
  2. Step 2: Convert to fraction form
    20,557.73/30,838.10 = 6,518.82/x
  3. Step 3: Cross multiply
    20,557.73x = 30,838.10 × 6,518.82
  4. Step 4: Simplify right side
    20,557.73x = 201,027,990.45
  5. Step 5: Solve for x
    x = 201,027,990.45/20,557.73
  6. Step 6: Final answer
    x = 9,778.71

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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.