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Finding the Fourth Proportional to 20,391.48, 30,584.93 and 7,063.07

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Solution

The fourth proportional to 20,391.48, 30,584.93 and 7,063.07 is: 10,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.48 : 30,584.93 = 7,063.07 : x
  2. Step 2: Convert to fraction form
    20,391.48/30,584.93 = 7,063.07/x
  3. Step 3: Cross multiply
    20,391.48x = 30,584.93 × 7,063.07
  4. Step 4: Simplify right side
    20,391.48x = 216,023,313.30
  5. Step 5: Solve for x
    x = 216,023,313.30/20,391.48
  6. Step 6: Final answer
    x = 10,593.80

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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.