Home / 20,426.82-30,640.25-6,386.92

Finding the Fourth Proportional to 20,426.82, 30,640.25 and 6,386.92

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Solution

The fourth proportional to 20,426.82, 30,640.25 and 6,386.92 is: 9,580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.82 : 30,640.25 = 6,386.92 : x
  2. Step 2: Convert to fraction form
    20,426.82/30,640.25 = 6,386.92/x
  3. Step 3: Cross multiply
    20,426.82x = 30,640.25 × 6,386.92
  4. Step 4: Simplify right side
    20,426.82x = 195,696,640.39
  5. Step 5: Solve for x
    x = 195,696,640.39/20,426.82
  6. Step 6: Final answer
    x = 9,580.38

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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.