Home / 20,421.84-30,632.72-6,383.06

Finding the Fourth Proportional to 20,421.84, 30,632.72 and 6,383.06

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Solution

The fourth proportional to 20,421.84, 30,632.72 and 6,383.06 is: 9,574.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421.84 : 30,632.72 = 6,383.06 : x
  2. Step 2: Convert to fraction form
    20,421.84/30,632.72 = 6,383.06/x
  3. Step 3: Cross multiply
    20,421.84x = 30,632.72 × 6,383.06
  4. Step 4: Simplify right side
    20,421.84x = 195,530,489.72
  5. Step 5: Solve for x
    x = 195,530,489.72/20,421.84
  6. Step 6: Final answer
    x = 9,574.58

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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.