Home / 20,960.21-28,923.80-12,005.66

Finding the Fourth Proportional to 20,960.21, 28,923.80 and 12,005.66

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Solution

The fourth proportional to 20,960.21, 28,923.80 and 12,005.66 is: 16,567.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.21 : 28,923.80 = 12,005.66 : x
  2. Step 2: Convert to fraction form
    20,960.21/28,923.80 = 12,005.66/x
  3. Step 3: Cross multiply
    20,960.21x = 28,923.80 × 12,005.66
  4. Step 4: Simplify right side
    20,960.21x = 347,249,104.06
  5. Step 5: Solve for x
    x = 347,249,104.06/20,960.21
  6. Step 6: Final answer
    x = 16,567.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.