Home / 20,840.09-28,761.35-12,344.94

Finding the Fourth Proportional to 20,840.09, 28,761.35 and 12,344.94

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Solution

The fourth proportional to 20,840.09, 28,761.35 and 12,344.94 is: 17,037.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.09 : 28,761.35 = 12,344.94 : x
  2. Step 2: Convert to fraction form
    20,840.09/28,761.35 = 12,344.94/x
  3. Step 3: Cross multiply
    20,840.09x = 28,761.35 × 12,344.94
  4. Step 4: Simplify right side
    20,840.09x = 355,057,078.34
  5. Step 5: Solve for x
    x = 355,057,078.34/20,840.09
  6. Step 6: Final answer
    x = 17,037.22

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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.