Home / 20,477.72-30,716.55-6,438.97

Finding the Fourth Proportional to 20,477.72, 30,716.55 and 6,438.97

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Solution

The fourth proportional to 20,477.72, 30,716.55 and 6,438.97 is: 9,658.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.72 : 30,716.55 = 6,438.97 : x
  2. Step 2: Convert to fraction form
    20,477.72/30,716.55 = 6,438.97/x
  3. Step 3: Cross multiply
    20,477.72x = 30,716.55 × 6,438.97
  4. Step 4: Simplify right side
    20,477.72x = 197,783,020.74
  5. Step 5: Solve for x
    x = 197,783,020.74/20,477.72
  6. Step 6: Final answer
    x = 9,658.45

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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.