Home / 20,954.16-28,918.42-12,004.61

Finding the Fourth Proportional to 20,954.16, 28,918.42 and 12,004.61

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Solution

The fourth proportional to 20,954.16, 28,918.42 and 12,004.61 is: 16,567.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.16 : 28,918.42 = 12,004.61 : x
  2. Step 2: Convert to fraction form
    20,954.16/28,918.42 = 12,004.61/x
  3. Step 3: Cross multiply
    20,954.16x = 28,918.42 × 12,004.61
  4. Step 4: Simplify right side
    20,954.16x = 347,154,179.31
  5. Step 5: Solve for x
    x = 347,154,179.31/20,954.16
  6. Step 6: Final answer
    x = 16,567.32

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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.