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Finding the Fourth Proportional to 20,661.51, 30,950.67 and 9,552.90

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Solution

The fourth proportional to 20,661.51, 30,950.67 and 9,552.90 is: 14,310.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.51 : 30,950.67 = 9,552.90 : x
  2. Step 2: Convert to fraction form
    20,661.51/30,950.67 = 9,552.90/x
  3. Step 3: Cross multiply
    20,661.51x = 30,950.67 × 9,552.90
  4. Step 4: Simplify right side
    20,661.51x = 295,668,655.44
  5. Step 5: Solve for x
    x = 295,668,655.44/20,661.51
  6. Step 6: Final answer
    x = 14,310.12

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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.